aboutsummaryrefslogtreecommitdiffstats
diff options
context:
space:
mode:
authorLinus Torvalds <torvalds@linux-foundation.org>2008-10-30 15:53:33 -0400
committerLinus Torvalds <torvalds@linux-foundation.org>2008-10-30 15:53:33 -0400
commite61467e9b6c88e97560873603cf9aceaf7435480 (patch)
tree2b0a75dd5a263f82d520bdfb28da71210471c998
parentc732acd96085347027b11961463a243c568d9aab (diff)
parent09d9327b3420002c9952a81db37effec9dc1135e (diff)
Merge branch 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linus
* 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linus: CHAR: Delete old and now unused M48T35 RTC driver for SGI IP27. CHAR: Delete old and now unused DS1286 driver. MIPS: Sort out CPU type to name translation. MIPS: Use the new byteorder headers MIPS: Probe for watch registers on cores of all vendors, not just MTI. MIPS: Switch FPU emulator trap to BREAK instruction. MIPS: SMP: Do not initialize __cpu_number_map/__cpu_logical_map for CPU 0. MIPS: Consider value of c0_ebase when computing value of exception base. MIPS: Clean up MIPSxx-optimized bitop functions MIPS: New feature test macro cpu_has_mips_r MIPS: RBTX4927: Add GPIO-LED support MIPS: TXx9: Fix RBTX4939 ethernet address initialization
Diffstat
-rw-r--r--arch/mips/Kconfig5
-rw-r--r--arch/mips/configs/ip22_defconfig1
-rw-r--r--arch/mips/configs/ip27_defconfig1
-rw-r--r--arch/mips/configs/ip28_defconfig2
-rw-r--r--arch/mips/include/asm/bitops.h114
-rw-r--r--arch/mips/include/asm/break.h1
-rw-r--r--arch/mips/include/asm/byteorder.h40
-rw-r--r--arch/mips/include/asm/cpu-features.h2
-rw-r--r--arch/mips/include/asm/ds1286.h15
-rw-r--r--arch/mips/include/asm/fpu_emulator.h17
-rw-r--r--arch/mips/include/asm/m48t35.h27
-rw-r--r--arch/mips/kernel/cpu-probe.c247
-rw-r--r--arch/mips/kernel/smp.c6
-rw-r--r--arch/mips/kernel/traps.c29
-rw-r--r--arch/mips/kernel/unaligned.c12
-rw-r--r--arch/mips/math-emu/cp1emu.c4
-rw-r--r--arch/mips/math-emu/dsemul.c7
-rw-r--r--arch/mips/math-emu/dsemul.h17
-rw-r--r--arch/mips/txx9/rbtx4927/setup.c25
-rw-r--r--arch/mips/txx9/rbtx4939/setup.c14
-rw-r--r--drivers/char/Kconfig22
-rw-r--r--drivers/char/Makefile2
-rw-r--r--drivers/char/ds1286.c585
-rw-r--r--drivers/char/ip27-rtc.c329
24 files changed, 281 insertions, 1243 deletions
diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig
index 653574bc19cf..f4af967a6b30 100644
--- a/arch/mips/Kconfig
+++ b/arch/mips/Kconfig
@@ -327,7 +327,6 @@ config SGI_IP22
327 select IP22_CPU_SCACHE 327 select IP22_CPU_SCACHE
328 select IRQ_CPU 328 select IRQ_CPU
329 select GENERIC_ISA_DMA_SUPPORT_BROKEN 329 select GENERIC_ISA_DMA_SUPPORT_BROKEN
330 select SGI_HAS_DS1286
331 select SGI_HAS_I8042 330 select SGI_HAS_I8042
332 select SGI_HAS_INDYDOG 331 select SGI_HAS_INDYDOG
333 select SGI_HAS_HAL2 332 select SGI_HAS_HAL2
@@ -382,7 +381,6 @@ config SGI_IP28
382 select HW_HAS_EISA 381 select HW_HAS_EISA
383 select I8253 382 select I8253
384 select I8259 383 select I8259
385 select SGI_HAS_DS1286
386 select SGI_HAS_I8042 384 select SGI_HAS_I8042
387 select SGI_HAS_INDYDOG 385 select SGI_HAS_INDYDOG
388 select SGI_HAS_HAL2 386 select SGI_HAS_HAL2
@@ -893,9 +891,6 @@ config EMMA2RH
893config SERIAL_RM9000 891config SERIAL_RM9000
894 bool 892 bool
895 893
896config SGI_HAS_DS1286
897 bool
898
899config SGI_HAS_INDYDOG 894config SGI_HAS_INDYDOG
900 bool 895 bool
901 896
diff --git a/arch/mips/configs/ip22_defconfig b/arch/mips/configs/ip22_defconfig
index cc8e6bf2b245..f719bf5e01aa 100644
--- a/arch/mips/configs/ip22_defconfig
+++ b/arch/mips/configs/ip22_defconfig
@@ -771,7 +771,6 @@ CONFIG_WATCHDOG=y
771CONFIG_INDYDOG=m 771CONFIG_INDYDOG=m
772# CONFIG_HW_RANDOM is not set 772# CONFIG_HW_RANDOM is not set
773# CONFIG_RTC is not set 773# CONFIG_RTC is not set
774CONFIG_SGI_DS1286=m
775# CONFIG_R3964 is not set 774# CONFIG_R3964 is not set
776CONFIG_RAW_DRIVER=m 775CONFIG_RAW_DRIVER=m
777CONFIG_MAX_RAW_DEVS=256 776CONFIG_MAX_RAW_DEVS=256
diff --git a/arch/mips/configs/ip27_defconfig b/arch/mips/configs/ip27_defconfig
index 831d3e5a1ea6..34ea319be94c 100644
--- a/arch/mips/configs/ip27_defconfig
+++ b/arch/mips/configs/ip27_defconfig
@@ -701,7 +701,6 @@ CONFIG_LEGACY_PTY_COUNT=256
701# CONFIG_WATCHDOG is not set 701# CONFIG_WATCHDOG is not set
702CONFIG_HW_RANDOM=m 702CONFIG_HW_RANDOM=m
703# CONFIG_RTC is not set 703# CONFIG_RTC is not set
704CONFIG_SGI_IP27_RTC=y
705# CONFIG_R3964 is not set 704# CONFIG_R3964 is not set
706# CONFIG_APPLICOM is not set 705# CONFIG_APPLICOM is not set
707# CONFIG_DRM is not set 706# CONFIG_DRM is not set
diff --git a/arch/mips/configs/ip28_defconfig b/arch/mips/configs/ip28_defconfig
index 822b01f643e3..70a744e9a8c5 100644
--- a/arch/mips/configs/ip28_defconfig
+++ b/arch/mips/configs/ip28_defconfig
@@ -70,7 +70,6 @@ CONFIG_CPU_BIG_ENDIAN=y
70CONFIG_SYS_SUPPORTS_BIG_ENDIAN=y 70CONFIG_SYS_SUPPORTS_BIG_ENDIAN=y
71CONFIG_IRQ_CPU=y 71CONFIG_IRQ_CPU=y
72CONFIG_SWAP_IO_SPACE=y 72CONFIG_SWAP_IO_SPACE=y
73CONFIG_SGI_HAS_DS1286=y
74CONFIG_SGI_HAS_INDYDOG=y 73CONFIG_SGI_HAS_INDYDOG=y
75CONFIG_SGI_HAS_SEEQ=y 74CONFIG_SGI_HAS_SEEQ=y
76CONFIG_SGI_HAS_WD93=y 75CONFIG_SGI_HAS_WD93=y
@@ -585,7 +584,6 @@ CONFIG_LEGACY_PTY_COUNT=256
585# CONFIG_IPMI_HANDLER is not set 584# CONFIG_IPMI_HANDLER is not set
586# CONFIG_HW_RANDOM is not set 585# CONFIG_HW_RANDOM is not set
587# CONFIG_RTC is not set 586# CONFIG_RTC is not set
588CONFIG_SGI_DS1286=y
589# CONFIG_DTLK is not set 587# CONFIG_DTLK is not set
590# CONFIG_R3964 is not set 588# CONFIG_R3964 is not set
591# CONFIG_RAW_DRIVER is not set 589# CONFIG_RAW_DRIVER is not set
diff --git a/arch/mips/include/asm/bitops.h b/arch/mips/include/asm/bitops.h
index 49df8c4c9d25..bac4a960b24c 100644
--- a/arch/mips/include/asm/bitops.h
+++ b/arch/mips/include/asm/bitops.h
@@ -558,39 +558,67 @@ static inline void __clear_bit_unlock(unsigned long nr, volatile unsigned long *
558 __clear_bit(nr, addr); 558 __clear_bit(nr, addr);
559} 559}
560 560
561#if defined(CONFIG_CPU_MIPS32) || defined(CONFIG_CPU_MIPS64)
562
563/* 561/*
564 * Return the bit position (0..63) of the most significant 1 bit in a word 562 * Return the bit position (0..63) of the most significant 1 bit in a word
565 * Returns -1 if no 1 bit exists 563 * Returns -1 if no 1 bit exists
566 */ 564 */
567static inline unsigned long __fls(unsigned long x) 565static inline unsigned long __fls(unsigned long word)
568{ 566{
569 int lz; 567 int num;
570 568
571 if (sizeof(x) == 4) { 569 if (BITS_PER_LONG == 32 &&
570 __builtin_constant_p(cpu_has_mips_r) && cpu_has_mips_r) {
572 __asm__( 571 __asm__(
573 " .set push \n" 572 " .set push \n"
574 " .set mips32 \n" 573 " .set mips32 \n"
575 " clz %0, %1 \n" 574 " clz %0, %1 \n"
576 " .set pop \n" 575 " .set pop \n"
577 : "=r" (lz) 576 : "=r" (num)
578 : "r" (x)); 577 : "r" (word));
579 578
580 return 31 - lz; 579 return 31 - num;
581 } 580 }
582 581
583 BUG_ON(sizeof(x) != 8); 582 if (BITS_PER_LONG == 64 &&
583 __builtin_constant_p(cpu_has_mips64) && cpu_has_mips64) {
584 __asm__(
585 " .set push \n"
586 " .set mips64 \n"
587 " dclz %0, %1 \n"
588 " .set pop \n"
589 : "=r" (num)
590 : "r" (word));
584 591
585 __asm__( 592 return 63 - num;
586 " .set push \n" 593 }
587 " .set mips64 \n" 594
588 " dclz %0, %1 \n" 595 num = BITS_PER_LONG - 1;
589 " .set pop \n"
590 : "=r" (lz)
591 : "r" (x));
592 596
593 return 63 - lz; 597#if BITS_PER_LONG == 64
598 if (!(word & (~0ul << 32))) {
599 num -= 32;
600 word <<= 32;
601 }
602#endif
603 if (!(word & (~0ul << (BITS_PER_LONG-16)))) {
604 num -= 16;
605 word <<= 16;
606 }
607 if (!(word & (~0ul << (BITS_PER_LONG-8)))) {
608 num -= 8;
609 word <<= 8;
610 }
611 if (!(word & (~0ul << (BITS_PER_LONG-4)))) {
612 num -= 4;
613 word <<= 4;
614 }
615 if (!(word & (~0ul << (BITS_PER_LONG-2)))) {
616 num -= 2;
617 word <<= 2;
618 }
619 if (!(word & (~0ul << (BITS_PER_LONG-1))))
620 num -= 1;
621 return num;
594} 622}
595 623
596/* 624/*
@@ -612,23 +640,43 @@ static inline unsigned long __ffs(unsigned long word)
612 * This is defined the same way as ffs. 640 * This is defined the same way as ffs.
613 * Note fls(0) = 0, fls(1) = 1, fls(0x80000000) = 32. 641 * Note fls(0) = 0, fls(1) = 1, fls(0x80000000) = 32.
614 */ 642 */
615static inline int fls(int word) 643static inline int fls(int x)
616{ 644{
617 __asm__("clz %0, %1" : "=r" (word) : "r" (word)); 645 int r;
618 646
619 return 32 - word; 647 if (__builtin_constant_p(cpu_has_mips_r) && cpu_has_mips_r) {
620} 648 __asm__("clz %0, %1" : "=r" (x) : "r" (x));
621 649
622#if defined(CONFIG_64BIT) && defined(CONFIG_CPU_MIPS64) 650 return 32 - x;
623static inline int fls64(__u64 word) 651 }
624{
625 __asm__("dclz %0, %1" : "=r" (word) : "r" (word));
626 652
627 return 64 - word; 653 r = 32;
654 if (!x)
655 return 0;
656 if (!(x & 0xffff0000u)) {
657 x <<= 16;
658 r -= 16;
659 }
660 if (!(x & 0xff000000u)) {
661 x <<= 8;
662 r -= 8;
663 }
664 if (!(x & 0xf0000000u)) {
665 x <<= 4;
666 r -= 4;
667 }
668 if (!(x & 0xc0000000u)) {
669 x <<= 2;
670 r -= 2;
671 }
672 if (!(x & 0x80000000u)) {
673 x <<= 1;
674 r -= 1;
675 }
676 return r;
628} 677}
629#else 678
630#include <asm-generic/bitops/fls64.h> 679#include <asm-generic/bitops/fls64.h>
631#endif
632 680
633/* 681/*
634 * ffs - find first bit set. 682 * ffs - find first bit set.
@@ -646,16 +694,6 @@ static inline int ffs(int word)
646 return fls(word & -word); 694 return fls(word & -word);
647} 695}
648 696
649#else
650
651#include <asm-generic/bitops/__ffs.h>
652#include <asm-generic/bitops/__fls.h>
653#include <asm-generic/bitops/ffs.h>
654#include <asm-generic/bitops/fls.h>
655#include <asm-generic/bitops/fls64.h>
656
657#endif /*defined(CONFIG_CPU_MIPS32) || defined(CONFIG_CPU_MIPS64) */
658
659#include <asm-generic/bitops/ffz.h> 697#include <asm-generic/bitops/ffz.h>
660#include <asm-generic/bitops/find.h> 698#include <asm-generic/bitops/find.h>
661 699
diff --git a/arch/mips/include/asm/break.h b/arch/mips/include/asm/break.h
index 25b980c91e7e..44437ed765e8 100644
--- a/arch/mips/include/asm/break.h
+++ b/arch/mips/include/asm/break.h
@@ -29,6 +29,7 @@
29#define _BRK_THREADBP 11 /* For threads, user bp (used by debuggers) */ 29#define _BRK_THREADBP 11 /* For threads, user bp (used by debuggers) */
30#define BRK_BUG 512 /* Used by BUG() */ 30#define BRK_BUG 512 /* Used by BUG() */
31#define BRK_KDB 513 /* Used in KDB_ENTER() */ 31#define BRK_KDB 513 /* Used in KDB_ENTER() */
32#define BRK_MEMU 514 /* Used by FPU emulator */
32#define BRK_MULOVF 1023 /* Multiply overflow */ 33#define BRK_MULOVF 1023 /* Multiply overflow */
33 34
34#endif /* __ASM_BREAK_H */ 35#endif /* __ASM_BREAK_H */
diff --git a/arch/mips/include/asm/byteorder.h b/arch/mips/include/asm/byteorder.h
index fe7dc2d59b69..2988d29a0867 100644
--- a/arch/mips/include/asm/byteorder.h
+++ b/arch/mips/include/asm/byteorder.h
@@ -11,11 +11,19 @@
11#include <linux/compiler.h> 11#include <linux/compiler.h>
12#include <asm/types.h> 12#include <asm/types.h>
13 13
14#ifdef __GNUC__ 14#if defined(__MIPSEB__)
15# define __BIG_ENDIAN
16#elif defined(__MIPSEL__)
17# define __LITTLE_ENDIAN
18#else
19# error "MIPS, but neither __MIPSEB__, nor __MIPSEL__???"
20#endif
21
22#define __SWAB_64_THRU_32__
15 23
16#ifdef CONFIG_CPU_MIPSR2 24#ifdef CONFIG_CPU_MIPSR2
17 25
18static __inline__ __attribute_const__ __u16 ___arch__swab16(__u16 x) 26static inline __attribute_const__ __u16 __arch_swab16(__u16 x)
19{ 27{
20 __asm__( 28 __asm__(
21 " wsbh %0, %1 \n" 29 " wsbh %0, %1 \n"
@@ -24,9 +32,9 @@ static __inline__ __attribute_const__ __u16 ___arch__swab16(__u16 x)
24 32
25 return x; 33 return x;
26} 34}
27#define __arch__swab16(x) ___arch__swab16(x) 35#define __arch_swab16 __arch_swab16
28 36
29static __inline__ __attribute_const__ __u32 ___arch__swab32(__u32 x) 37static inline __attribute_const__ __u32 __arch_swab32(__u32 x)
30{ 38{
31 __asm__( 39 __asm__(
32 " wsbh %0, %1 \n" 40 " wsbh %0, %1 \n"
@@ -36,11 +44,10 @@ static __inline__ __attribute_const__ __u32 ___arch__swab32(__u32 x)
36 44
37 return x; 45 return x;
38} 46}
39#define __arch__swab32(x) ___arch__swab32(x) 47#define __arch_swab32 __arch_swab32
40 48
41#ifdef CONFIG_CPU_MIPS64_R2 49#ifdef CONFIG_CPU_MIPS64_R2
42 50static inline __attribute_const__ __u64 __arch_swab64(__u64 x)
43static __inline__ __attribute_const__ __u64 ___arch__swab64(__u64 x)
44{ 51{
45 __asm__( 52 __asm__(
46 " dsbh %0, %1 \n" 53 " dsbh %0, %1 \n"
@@ -51,26 +58,11 @@ static __inline__ __attribute_const__ __u64 ___arch__swab64(__u64 x)
51 58
52 return x; 59 return x;
53} 60}
54 61#define __arch_swab64 __arch_swab64
55#define __arch__swab64(x) ___arch__swab64(x)
56
57#endif /* CONFIG_CPU_MIPS64_R2 */ 62#endif /* CONFIG_CPU_MIPS64_R2 */
58 63
59#endif /* CONFIG_CPU_MIPSR2 */ 64#endif /* CONFIG_CPU_MIPSR2 */
60 65
61#if !defined(__STRICT_ANSI__) || defined(__KERNEL__) 66#include <linux/byteorder.h>
62# define __BYTEORDER_HAS_U64__
63# define __SWAB_64_THRU_32__
64#endif
65
66#endif /* __GNUC__ */
67
68#if defined(__MIPSEB__)
69# include <linux/byteorder/big_endian.h>
70#elif defined(__MIPSEL__)
71# include <linux/byteorder/little_endian.h>
72#else
73# error "MIPS, but neither __MIPSEB__, nor __MIPSEL__???"
74#endif
75 67
76#endif /* _ASM_BYTEORDER_H */ 68#endif /* _ASM_BYTEORDER_H */
diff --git a/arch/mips/include/asm/cpu-features.h b/arch/mips/include/asm/cpu-features.h
index 5ea701fc3425..12d12dfe73c0 100644
--- a/arch/mips/include/asm/cpu-features.h
+++ b/arch/mips/include/asm/cpu-features.h
@@ -141,6 +141,8 @@
141#define cpu_has_mips64 (cpu_has_mips64r1 | cpu_has_mips64r2) 141#define cpu_has_mips64 (cpu_has_mips64r1 | cpu_has_mips64r2)
142#define cpu_has_mips_r1 (cpu_has_mips32r1 | cpu_has_mips64r1) 142#define cpu_has_mips_r1 (cpu_has_mips32r1 | cpu_has_mips64r1)
143#define cpu_has_mips_r2 (cpu_has_mips32r2 | cpu_has_mips64r2) 143#define cpu_has_mips_r2 (cpu_has_mips32r2 | cpu_has_mips64r2)
144#define cpu_has_mips_r (cpu_has_mips32r1 | cpu_has_mips32r2 | \
145 cpu_has_mips64r1 | cpu_has_mips64r2)
144 146
145#ifndef cpu_has_dsp 147#ifndef cpu_has_dsp
146#define cpu_has_dsp (cpu_data[0].ases & MIPS_ASE_DSP) 148#define cpu_has_dsp (cpu_data[0].ases & MIPS_ASE_DSP)
diff --git a/arch/mips/include/asm/ds1286.h b/arch/mips/include/asm/ds1286.h
deleted file mode 100644
index 6983b6ff0af3..000000000000
--- a/arch/mips/include/asm/ds1286.h
+++ /dev/null
@@ -1,15 +0,0 @@
1/*
2 * This file is subject to the terms and conditions of the GNU General Public
3 * License. See the file "COPYING" in the main directory of this archive
4 * for more details.
5 *
6 * Machine dependent access functions for RTC registers.
7 *
8 * Copyright (C) 2003 Ralf Baechle (ralf@linux-mips.org)
9 */
10#ifndef _ASM_DS1286_H
11#define _ASM_DS1286_H
12
13#include <ds1286.h>
14
15#endif /* _ASM_DS1286_H */
diff --git a/arch/mips/include/asm/fpu_emulator.h b/arch/mips/include/asm/fpu_emulator.h
index 2731c38bd7ae..e5189572956c 100644
--- a/arch/mips/include/asm/fpu_emulator.h
+++ b/arch/mips/include/asm/fpu_emulator.h
@@ -23,6 +23,9 @@
23#ifndef _ASM_FPU_EMULATOR_H 23#ifndef _ASM_FPU_EMULATOR_H
24#define _ASM_FPU_EMULATOR_H 24#define _ASM_FPU_EMULATOR_H
25 25
26#include <asm/break.h>
27#include <asm/inst.h>
28
26struct mips_fpu_emulator_stats { 29struct mips_fpu_emulator_stats {
27 unsigned int emulated; 30 unsigned int emulated;
28 unsigned int loads; 31 unsigned int loads;
@@ -34,4 +37,18 @@ struct mips_fpu_emulator_stats {
34 37
35extern struct mips_fpu_emulator_stats fpuemustats; 38extern struct mips_fpu_emulator_stats fpuemustats;
36 39
40extern int mips_dsemul(struct pt_regs *regs, mips_instruction ir,
41 unsigned long cpc);
42extern int do_dsemulret(struct pt_regs *xcp);
43
44/*
45 * Instruction inserted following the badinst to further tag the sequence
46 */
47#define BD_COOKIE 0x0000bd36 /* tne $0, $0 with baggage */
48
49/*
50 * Break instruction with special math emu break code set
51 */
52#define BREAK_MATH (0x0000000d | (BRK_MEMU << 16))
53
37#endif /* _ASM_FPU_EMULATOR_H */ 54#endif /* _ASM_FPU_EMULATOR_H */
diff --git a/arch/mips/include/asm/m48t35.h b/arch/mips/include/asm/m48t35.h
deleted file mode 100644
index f44852e9a96d..000000000000
--- a/arch/mips/include/asm/m48t35.h
+++ /dev/null
@@ -1,27 +0,0 @@
1/*
2 * Registers for the SGS-Thomson M48T35 Timekeeper RAM chip
3 */
4#ifndef _ASM_M48T35_H
5#define _ASM_M48T35_H
6
7#include <linux/spinlock.h>
8
9extern spinlock_t rtc_lock;
10
11struct m48t35_rtc {
12 volatile u8 pad[0x7ff8]; /* starts at 0x7ff8 */
13 volatile u8 control;
14 volatile u8 sec;
15 volatile u8 min;
16 volatile u8 hour;
17 volatile u8 day;
18 volatile u8 date;
19 volatile u8 month;
20 volatile u8 year;
21};
22
23#define M48T35_RTC_SET 0x80
24#define M48T35_RTC_STOPPED 0x80
25#define M48T35_RTC_READ 0x40
26
27#endif /* _ASM_M48T35_H */
diff --git a/arch/mips/kernel/cpu-probe.c b/arch/mips/kernel/cpu-probe.c
index 0cf15457ecac..c9207b5fd923 100644
--- a/arch/mips/kernel/cpu-probe.c
+++ b/arch/mips/kernel/cpu-probe.c
@@ -286,11 +286,12 @@ static inline int __cpu_has_fpu(void)
286#define R4K_OPTS (MIPS_CPU_TLB | MIPS_CPU_4KEX | MIPS_CPU_4K_CACHE \ 286#define R4K_OPTS (MIPS_CPU_TLB | MIPS_CPU_4KEX | MIPS_CPU_4K_CACHE \
287 | MIPS_CPU_COUNTER) 287 | MIPS_CPU_COUNTER)
288 288
289static inline void cpu_probe_legacy(struct cpuinfo_mips *c) 289static inline void cpu_probe_legacy(struct cpuinfo_mips *c, unsigned int cpu)
290{ 290{
291 switch (c->processor_id & 0xff00) { 291 switch (c->processor_id & 0xff00) {
292 case PRID_IMP_R2000: 292 case PRID_IMP_R2000:
293 c->cputype = CPU_R2000; 293 c->cputype = CPU_R2000;
294 __cpu_name[cpu] = "R2000";
294 c->isa_level = MIPS_CPU_ISA_I; 295 c->isa_level = MIPS_CPU_ISA_I;
295 c->options = MIPS_CPU_TLB | MIPS_CPU_3K_CACHE | 296 c->options = MIPS_CPU_TLB | MIPS_CPU_3K_CACHE |
296 MIPS_CPU_NOFPUEX; 297 MIPS_CPU_NOFPUEX;
@@ -299,13 +300,19 @@ static inline void cpu_probe_legacy(struct cpuinfo_mips *c)
299 c->tlbsize = 64; 300 c->tlbsize = 64;
300 break; 301 break;
301 case PRID_IMP_R3000: 302 case PRID_IMP_R3000:
302 if ((c->processor_id & 0xff) == PRID_REV_R3000A) 303 if ((c->processor_id & 0xff) == PRID_REV_R3000A) {
303 if (cpu_has_confreg()) 304 if (cpu_has_confreg()) {
304 c->cputype = CPU_R3081E; 305 c->cputype = CPU_R3081E;
305 else 306 __cpu_name[cpu] = "R3081";
307 } else {
306 c->cputype = CPU_R3000A; 308 c->cputype = CPU_R3000A;
307 else 309 __cpu_name[cpu] = "R3000A";
310 }
311 break;
312 } else {
308 c->cputype = CPU_R3000; 313 c->cputype = CPU_R3000;
314 __cpu_name[cpu] = "R3000";
315 }
309 c->isa_level = MIPS_CPU_ISA_I; 316 c->isa_level = MIPS_CPU_ISA_I;
310 c->options = MIPS_CPU_TLB | MIPS_CPU_3K_CACHE | 317 c->options = MIPS_CPU_TLB | MIPS_CPU_3K_CACHE |
311 MIPS_CPU_NOFPUEX; 318 MIPS_CPU_NOFPUEX;
@@ -315,15 +322,21 @@ static inline void cpu_probe_legacy(struct cpuinfo_mips *c)
315 break; 322 break;
316 case PRID_IMP_R4000: 323 case PRID_IMP_R4000:
317 if (read_c0_config() & CONF_SC) { 324 if (read_c0_config() & CONF_SC) {
318 if ((c->processor_id & 0xff) >= PRID_REV_R4400) 325 if ((c->processor_id & 0xff) >= PRID_REV_R4400) {
319 c->cputype = CPU_R4400PC; 326 c->cputype = CPU_R4400PC;
320 else 327 __cpu_name[cpu] = "R4400PC";
328 } else {
321 c->cputype = CPU_R4000PC; 329 c->cputype = CPU_R4000PC;
330 __cpu_name[cpu] = "R4000PC";
331 }
322 } else { 332 } else {
323 if ((c->processor_id & 0xff) >= PRID_REV_R4400) 333 if ((c->processor_id & 0xff) >= PRID_REV_R4400) {
324 c->cputype = CPU_R4400SC; 334 c->cputype = CPU_R4400SC;
325 else 335 __cpu_name[cpu] = "R4400SC";
336 } else {
326 c->cputype = CPU_R4000SC; 337 c->cputype = CPU_R4000SC;
338 __cpu_name[cpu] = "R4000SC";
339 }
327 } 340 }
328 341
329 c->isa_level = MIPS_CPU_ISA_III; 342 c->isa_level = MIPS_CPU_ISA_III;
@@ -336,25 +349,34 @@ static inline void cpu_probe_legacy(struct cpuinfo_mips *c)
336 switch (c->processor_id & 0xf0) { 349 switch (c->processor_id & 0xf0) {
337 case PRID_REV_VR4111: 350 case PRID_REV_VR4111:
338 c->cputype = CPU_VR4111; 351 c->cputype = CPU_VR4111;
352 __cpu_name[cpu] = "NEC VR4111";
339 break; 353 break;
340 case PRID_REV_VR4121: 354 case PRID_REV_VR4121:
341 c->cputype = CPU_VR4121; 355 c->cputype = CPU_VR4121;
356 __cpu_name[cpu] = "NEC VR4121";
342 break; 357 break;
343 case PRID_REV_VR4122: 358 case PRID_REV_VR4122:
344 if ((c->processor_id & 0xf) < 0x3) 359 if ((c->processor_id & 0xf) < 0x3) {
345 c->cputype = CPU_VR4122; 360 c->cputype = CPU_VR4122;
346 else 361 __cpu_name[cpu] = "NEC VR4122";
362 } else {
347 c->cputype = CPU_VR4181A; 363 c->cputype = CPU_VR4181A;
364 __cpu_name[cpu] = "NEC VR4181A";
365 }
348 break; 366 break;
349 case PRID_REV_VR4130: 367 case PRID_REV_VR4130:
350 if ((c->processor_id & 0xf) < 0x4) 368 if ((c->processor_id & 0xf) < 0x4) {
351 c->cputype = CPU_VR4131; 369 c->cputype = CPU_VR4131;
352 else 370 __cpu_name[cpu] = "NEC VR4131";
371 } else {
353 c->cputype = CPU_VR4133; 372 c->cputype = CPU_VR4133;
373 __cpu_name[cpu] = "NEC VR4133";
374 }
354 break; 375 break;
355 default: 376 default:
356 printk(KERN_INFO "Unexpected CPU of NEC VR4100 series\n"); 377 printk(KERN_INFO "Unexpected CPU of NEC VR4100 series\n");
357 c->cputype = CPU_VR41XX; 378 c->cputype = CPU_VR41XX;
379 __cpu_name[cpu] = "NEC Vr41xx";
358 break; 380 break;
359 } 381 }
360 c->isa_level = MIPS_CPU_ISA_III; 382 c->isa_level = MIPS_CPU_ISA_III;
@@ -363,6 +385,7 @@ static inline void cpu_probe_legacy(struct cpuinfo_mips *c)
363 break; 385 break;
364 case PRID_IMP_R4300: 386 case PRID_IMP_R4300:
365 c->cputype = CPU_R4300; 387 c->cputype = CPU_R4300;
388 __cpu_name[cpu] = "R4300";
366 c->isa_level = MIPS_CPU_ISA_III; 389 c->isa_level = MIPS_CPU_ISA_III;
367 c->options = R4K_OPTS | MIPS_CPU_FPU | MIPS_CPU_32FPR | 390 c->options = R4K_OPTS | MIPS_CPU_FPU | MIPS_CPU_32FPR |
368 MIPS_CPU_LLSC; 391 MIPS_CPU_LLSC;
@@ -370,6 +393,7 @@ static inline void cpu_probe_legacy(struct cpuinfo_mips *c)
370 break; 393 break;
371 case PRID_IMP_R4600: 394 case PRID_IMP_R4600:
372 c->cputype = CPU_R4600; 395 c->cputype = CPU_R4600;
396 __cpu_name[cpu] = "R4600";
373 c->isa_level = MIPS_CPU_ISA_III; 397 c->isa_level = MIPS_CPU_ISA_III;
374 c->options = R4K_OPTS | MIPS_CPU_FPU | MIPS_CPU_32FPR | 398 c->options = R4K_OPTS | MIPS_CPU_FPU | MIPS_CPU_32FPR |
375 MIPS_CPU_LLSC; 399 MIPS_CPU_LLSC;
@@ -384,6 +408,7 @@ static inline void cpu_probe_legacy(struct cpuinfo_mips *c)
384 * it's c0_prid id number with the TX3900. 408 * it's c0_prid id number with the TX3900.
385 */ 409 */
386 c->cputype = CPU_R4650; 410 c->cputype = CPU_R4650;
411 __cpu_name[cpu] = "R4650";
387 c->isa_level = MIPS_CPU_ISA_III; 412 c->isa_level = MIPS_CPU_ISA_III;
388 c->options = R4K_OPTS | MIPS_CPU_FPU | MIPS_CPU_LLSC; 413 c->options = R4K_OPTS | MIPS_CPU_FPU | MIPS_CPU_LLSC;
389 c->tlbsize = 48; 414 c->tlbsize = 48;
@@ -395,25 +420,26 @@ static inline void cpu_probe_legacy(struct cpuinfo_mips *c)
395 420
396 if ((c->processor_id & 0xf0) == (PRID_REV_TX3927 & 0xf0)) { 421 if ((c->processor_id & 0xf0) == (PRID_REV_TX3927 & 0xf0)) {
397 c->cputype = CPU_TX3927; 422 c->cputype = CPU_TX3927;
423 __cpu_name[cpu] = "TX3927";
398 c->tlbsize = 64; 424 c->tlbsize = 64;
399 } else { 425 } else {
400 switch (c->processor_id & 0xff) { 426 switch (c->processor_id & 0xff) {
401 case PRID_REV_TX3912: 427 case PRID_REV_TX3912:
402 c->cputype = CPU_TX3912; 428 c->cputype = CPU_TX3912;
429 __cpu_name[cpu] = "TX3912";
403 c->tlbsize = 32; 430 c->tlbsize = 32;
404 break; 431 break;
405 case PRID_REV_TX3922: 432 case PRID_REV_TX3922:
406 c->cputype = CPU_TX3922; 433 c->cputype = CPU_TX3922;
434 __cpu_name[cpu] = "TX3922";
407 c->tlbsize = 64; 435 c->tlbsize = 64;
408 break; 436 break;
409 default:
410 c->cputype = CPU_UNKNOWN;
411 break;
412 } 437 }
413 } 438 }
414 break; 439 break;
415 case PRID_IMP_R4700: 440 case PRID_IMP_R4700:
416 c->cputype = CPU_R4700; 441 c->cputype = CPU_R4700;
442 __cpu_name[cpu] = "R4700";
417 c->isa_level = MIPS_CPU_ISA_III; 443 c->isa_level = MIPS_CPU_ISA_III;
418 c->options = R4K_OPTS | MIPS_CPU_FPU | MIPS_CPU_32FPR | 444 c->options = R4K_OPTS | MIPS_CPU_FPU | MIPS_CPU_32FPR |
419 MIPS_CPU_LLSC; 445 MIPS_CPU_LLSC;
@@ -421,6 +447,7 @@ static inline void cpu_probe_legacy(struct cpuinfo_mips *c)
421 break; 447 break;
422 case PRID_IMP_TX49: 448 case PRID_IMP_TX49:
423 c->cputype = CPU_TX49XX; 449 c->cputype = CPU_TX49XX;
450 __cpu_name[cpu] = "R49XX";
424 c->isa_level = MIPS_CPU_ISA_III; 451 c->isa_level = MIPS_CPU_ISA_III;
425 c->options = R4K_OPTS | MIPS_CPU_LLSC; 452 c->options = R4K_OPTS | MIPS_CPU_LLSC;
426 if (!(c->processor_id & 0x08)) 453 if (!(c->processor_id & 0x08))
@@ -429,6 +456,7 @@ static inline void cpu_probe_legacy(struct cpuinfo_mips *c)
429 break; 456 break;
430 case PRID_IMP_R5000: 457 case PRID_IMP_R5000:
431 c->cputype = CPU_R5000; 458 c->cputype = CPU_R5000;
459 __cpu_name[cpu] = "R5000";
432 c->isa_level = MIPS_CPU_ISA_IV; 460 c->isa_level = MIPS_CPU_ISA_IV;
433 c->options = R4K_OPTS | MIPS_CPU_FPU | MIPS_CPU_32FPR | 461 c->options = R4K_OPTS | MIPS_CPU_FPU | MIPS_CPU_32FPR |
434 MIPS_CPU_LLSC; 462 MIPS_CPU_LLSC;
@@ -436,6 +464,7 @@ static inline void cpu_probe_legacy(struct cpuinfo_mips *c)
436 break; 464 break;
437 case PRID_IMP_R5432: 465 case PRID_IMP_R5432:
438 c->cputype = CPU_R5432; 466 c->cputype = CPU_R5432;
467 __cpu_name[cpu] = "R5432";
439 c->isa_level = MIPS_CPU_ISA_IV; 468 c->isa_level = MIPS_CPU_ISA_IV;
440 c->options = R4K_OPTS | MIPS_CPU_FPU | MIPS_CPU_32FPR | 469 c->options = R4K_OPTS | MIPS_CPU_FPU | MIPS_CPU_32FPR |
441 MIPS_CPU_WATCH | MIPS_CPU_LLSC; 470 MIPS_CPU_WATCH | MIPS_CPU_LLSC;
@@ -443,6 +472,7 @@ static inline void cpu_probe_legacy(struct cpuinfo_mips *c)
443 break; 472 break;
444 case PRID_IMP_R5500: 473 case PRID_IMP_R5500:
445 c->cputype = CPU_R5500; 474 c->cputype = CPU_R5500;
475 __cpu_name[cpu] = "R5500";
446 c->isa_level = MIPS_CPU_ISA_IV; 476 c->isa_level = MIPS_CPU_ISA_IV;
447 c->options = R4K_OPTS | MIPS_CPU_FPU | MIPS_CPU_32FPR | 477 c->options = R4K_OPTS | MIPS_CPU_FPU | MIPS_CPU_32FPR |
448 MIPS_CPU_WATCH | MIPS_CPU_LLSC; 478 MIPS_CPU_WATCH | MIPS_CPU_LLSC;
@@ -450,6 +480,7 @@ static inline void cpu_probe_legacy(struct cpuinfo_mips *c)
450 break; 480 break;
451 case PRID_IMP_NEVADA: 481 case PRID_IMP_NEVADA:
452 c->cputype = CPU_NEVADA; 482 c->cputype = CPU_NEVADA;
483 __cpu_name[cpu] = "Nevada";
453 c->isa_level = MIPS_CPU_ISA_IV; 484 c->isa_level = MIPS_CPU_ISA_IV;
454 c->options = R4K_OPTS | MIPS_CPU_FPU | MIPS_CPU_32FPR | 485 c->options = R4K_OPTS | MIPS_CPU_FPU | MIPS_CPU_32FPR |
455 MIPS_CPU_DIVEC | MIPS_CPU_LLSC; 486 MIPS_CPU_DIVEC | MIPS_CPU_LLSC;
@@ -457,6 +488,7 @@ static inline void cpu_probe_legacy(struct cpuinfo_mips *c)
457 break; 488 break;
458 case PRID_IMP_R6000: 489 case PRID_IMP_R6000:
459 c->cputype = CPU_R6000; 490 c->cputype = CPU_R6000;
491 __cpu_name[cpu] = "R6000";
460 c->isa_level = MIPS_CPU_ISA_II; 492 c->isa_level = MIPS_CPU_ISA_II;
461 c->options = MIPS_CPU_TLB | MIPS_CPU_FPU | 493 c->options = MIPS_CPU_TLB | MIPS_CPU_FPU |
462 MIPS_CPU_LLSC; 494 MIPS_CPU_LLSC;
@@ -464,6 +496,7 @@ static inline void cpu_probe_legacy(struct cpuinfo_mips *c)
464 break; 496 break;
465 case PRID_IMP_R6000A: 497 case PRID_IMP_R6000A:
466 c->cputype = CPU_R6000A; 498 c->cputype = CPU_R6000A;
499 __cpu_name[cpu] = "R6000A";
467 c->isa_level = MIPS_CPU_ISA_II; 500 c->isa_level = MIPS_CPU_ISA_II;
468 c->options = MIPS_CPU_TLB | MIPS_CPU_FPU | 501 c->options = MIPS_CPU_TLB | MIPS_CPU_FPU |
469 MIPS_CPU_LLSC; 502 MIPS_CPU_LLSC;
@@ -471,6 +504,7 @@ static inline void cpu_probe_legacy(struct cpuinfo_mips *c)
471 break; 504 break;
472 case PRID_IMP_RM7000: 505 case PRID_IMP_RM7000:
473 c->cputype = CPU_RM7000; 506 c->cputype = CPU_RM7000;
507 __cpu_name[cpu] = "RM7000";
474 c->isa_level = MIPS_CPU_ISA_IV; 508 c->isa_level = MIPS_CPU_ISA_IV;
475 c->options = R4K_OPTS | MIPS_CPU_FPU | MIPS_CPU_32FPR | 509 c->options = R4K_OPTS | MIPS_CPU_FPU | MIPS_CPU_32FPR |
476 MIPS_CPU_LLSC; 510 MIPS_CPU_LLSC;
@@ -486,6 +520,7 @@ static inline void cpu_probe_legacy(struct cpuinfo_mips *c)
486 break; 520 break;
487 case PRID_IMP_RM9000: 521 case PRID_IMP_RM9000:
488 c->cputype = CPU_RM9000; 522 c->cputype = CPU_RM9000;
523 __cpu_name[cpu] = "RM9000";
489 c->isa_level = MIPS_CPU_ISA_IV; 524 c->isa_level = MIPS_CPU_ISA_IV;
490 c->options = R4K_OPTS | MIPS_CPU_FPU | MIPS_CPU_32FPR | 525 c->options = R4K_OPTS | MIPS_CPU_FPU | MIPS_CPU_32FPR |
491 MIPS_CPU_LLSC; 526 MIPS_CPU_LLSC;
@@ -500,6 +535,7 @@ static inline void cpu_probe_legacy(struct cpuinfo_mips *c)
500 break; 535 break;
501 case PRID_IMP_R8000: 536 case PRID_IMP_R8000:
502 c->cputype = CPU_R8000; 537 c->cputype = CPU_R8000;
538 __cpu_name[cpu] = "RM8000";
503 c->isa_level = MIPS_CPU_ISA_IV; 539 c->isa_level = MIPS_CPU_ISA_IV;
504 c->options = MIPS_CPU_TLB | MIPS_CPU_4KEX | 540 c->options = MIPS_CPU_TLB | MIPS_CPU_4KEX |
505 MIPS_CPU_FPU | MIPS_CPU_32FPR | 541 MIPS_CPU_FPU | MIPS_CPU_32FPR |
@@ -508,6 +544,7 @@ static inline void cpu_probe_legacy(struct cpuinfo_mips *c)
508 break; 544 break;
509 case PRID_IMP_R10000: 545 case PRID_IMP_R10000:
510 c->cputype = CPU_R10000; 546 c->cputype = CPU_R10000;
547 __cpu_name[cpu] = "R10000";
511 c->isa_level = MIPS_CPU_ISA_IV; 548 c->isa_level = MIPS_CPU_ISA_IV;
512 c->options = MIPS_CPU_TLB | MIPS_CPU_4K_CACHE | MIPS_CPU_4KEX | 549 c->options = MIPS_CPU_TLB | MIPS_CPU_4K_CACHE | MIPS_CPU_4KEX |
513 MIPS_CPU_FPU | MIPS_CPU_32FPR | 550 MIPS_CPU_FPU | MIPS_CPU_32FPR |
@@ -517,6 +554,7 @@ static inline void cpu_probe_legacy(struct cpuinfo_mips *c)
517 break; 554 break;
518 case PRID_IMP_R12000: 555 case PRID_IMP_R12000:
519 c->cputype = CPU_R12000; 556 c->cputype = CPU_R12000;
557 __cpu_name[cpu] = "R12000";
520 c->isa_level = MIPS_CPU_ISA_IV; 558 c->isa_level = MIPS_CPU_ISA_IV;
521 c->options = MIPS_CPU_TLB | MIPS_CPU_4K_CACHE | MIPS_CPU_4KEX | 559 c->options = MIPS_CPU_TLB | MIPS_CPU_4K_CACHE | MIPS_CPU_4KEX |
522 MIPS_CPU_FPU | MIPS_CPU_32FPR | 560 MIPS_CPU_FPU | MIPS_CPU_32FPR |
@@ -526,6 +564,7 @@ static inline void cpu_probe_legacy(struct cpuinfo_mips *c)
526 break; 564 break;
527 case PRID_IMP_R14000: 565 case PRID_IMP_R14000:
528 c->cputype = CPU_R14000; 566 c->cputype = CPU_R14000;
567 __cpu_name[cpu] = "R14000";
529 c->isa_level = MIPS_CPU_ISA_IV; 568 c->isa_level = MIPS_CPU_ISA_IV;
530 c->options = MIPS_CPU_TLB | MIPS_CPU_4K_CACHE | MIPS_CPU_4KEX | 569 c->options = MIPS_CPU_TLB | MIPS_CPU_4K_CACHE | MIPS_CPU_4KEX |
531 MIPS_CPU_FPU | MIPS_CPU_32FPR | 570 MIPS_CPU_FPU | MIPS_CPU_32FPR |
@@ -535,6 +574,7 @@ static inline void cpu_probe_legacy(struct cpuinfo_mips *c)
535 break; 574 break;
536 case PRID_IMP_LOONGSON2: 575 case PRID_IMP_LOONGSON2:
537 c->cputype = CPU_LOONGSON2; 576 c->cputype = CPU_LOONGSON2;
577 __cpu_name[cpu] = "ICT Loongson-2";
538 c->isa_level = MIPS_CPU_ISA_III; 578 c->isa_level = MIPS_CPU_ISA_III;
539 c->options = R4K_OPTS | 579 c->options = R4K_OPTS |
540 MIPS_CPU_FPU | MIPS_CPU_LLSC | 580 MIPS_CPU_FPU | MIPS_CPU_LLSC |
@@ -652,21 +692,24 @@ static inline unsigned int decode_config3(struct cpuinfo_mips *c)
652 692
653static void __cpuinit decode_configs(struct cpuinfo_mips *c) 693static void __cpuinit decode_configs(struct cpuinfo_mips *c)
654{ 694{
695 int ok;
696
655 /* MIPS32 or MIPS64 compliant CPU. */ 697 /* MIPS32 or MIPS64 compliant CPU. */
656 c->options = MIPS_CPU_4KEX | MIPS_CPU_4K_CACHE | MIPS_CPU_COUNTER | 698 c->options = MIPS_CPU_4KEX | MIPS_CPU_4K_CACHE | MIPS_CPU_COUNTER |
657 MIPS_CPU_DIVEC | MIPS_CPU_LLSC | MIPS_CPU_MCHECK; 699 MIPS_CPU_DIVEC | MIPS_CPU_LLSC | MIPS_CPU_MCHECK;
658 700
659 c->scache.flags = MIPS_CACHE_NOT_PRESENT; 701 c->scache.flags = MIPS_CACHE_NOT_PRESENT;
660 702
661 /* Read Config registers. */ 703 ok = decode_config0(c); /* Read Config registers. */
662 if (!decode_config0(c)) 704 BUG_ON(!ok); /* Arch spec violation! */
663 return; /* actually worth a panic() */ 705 if (ok)
664 if (!decode_config1(c)) 706 ok = decode_config1(c);
665 return; 707 if (ok)
666 if (!decode_config2(c)) 708 ok = decode_config2(c);
667 return; 709 if (ok)
668 if (!decode_config3(c)) 710 ok = decode_config3(c);
669 return; 711
712 mips_probe_watch_registers(c);
670} 713}
671 714
672#ifdef CONFIG_CPU_MIPSR2 715#ifdef CONFIG_CPU_MIPSR2
@@ -675,52 +718,62 @@ extern void spram_config(void);
675static inline void spram_config(void) {} 718static inline void spram_config(void) {}
676#endif 719#endif
677 720
678static inline void cpu_probe_mips(struct cpuinfo_mips *c) 721static inline void cpu_probe_mips(struct cpuinfo_mips *c, unsigned int cpu)
679{ 722{
680 decode_configs(c); 723 decode_configs(c);
681 mips_probe_watch_registers(c);
682 switch (c->processor_id & 0xff00) { 724 switch (c->processor_id & 0xff00) {
683 case PRID_IMP_4KC: 725 case PRID_IMP_4KC:
684 c->cputype = CPU_4KC; 726 c->cputype = CPU_4KC;
727 __cpu_name[cpu] = "MIPS 4Kc";
685 break; 728 break;
686 case PRID_IMP_4KEC: 729 case PRID_IMP_4KEC:
687 c->cputype = CPU_4KEC; 730 c->cputype = CPU_4KEC;
731 __cpu_name[cpu] = "MIPS 4KEc";
688 break; 732 break;
689 case PRID_IMP_4KECR2: 733 case PRID_IMP_4KECR2:
690 c->cputype = CPU_4KEC; 734 c->cputype = CPU_4KEC;
735 __cpu_name[cpu] = "MIPS 4KEc";
691 break; 736 break;
692 case PRID_IMP_4KSC: 737 case PRID_IMP_4KSC:
693 case PRID_IMP_4KSD: 738 case PRID_IMP_4KSD:
694 c->cputype = CPU_4KSC; 739 c->cputype = CPU_4KSC;
740 __cpu_name[cpu] = "MIPS 4KSc";
695 break; 741 break;
696 case PRID_IMP_5KC: 742 case PRID_IMP_5KC:
697 c->cputype = CPU_5KC; 743 c->cputype = CPU_5KC;
744 __cpu_name[cpu] = "MIPS 5Kc";
698 break; 745 break;
699 case PRID_IMP_20KC: 746 case PRID_IMP_20KC:
700 c->cputype = CPU_20KC; 747 c->cputype = CPU_20KC;
748 __cpu_name[cpu] = "MIPS 20Kc";
701 break; 749 break;
702 case PRID_IMP_24K: 750 case PRID_IMP_24K:
703 case PRID_IMP_24KE: 751 case PRID_IMP_24KE:
704 c->cputype = CPU_24K; 752 c->cputype = CPU_24K;
753 __cpu_name[cpu] = "MIPS 24Kc";
705 break; 754 break;
706 case PRID_IMP_25KF: 755 case PRID_IMP_25KF:
707 c->cputype = CPU_25KF; 756 c->cputype = CPU_25KF;
757 __cpu_name[cpu] = "MIPS 25Kc";
708 break; 758 break;
709 case PRID_IMP_34K: 759 case PRID_IMP_34K:
710 c->cputype = CPU_34K; 760 c->cputype = CPU_34K;
761 __cpu_name[cpu] = "MIPS 34Kc";
711 break; 762 break;
712 case PRID_IMP_74K: 763 case PRID_IMP_74K:
713 c->cputype = CPU_74K; 764 c->cputype = CPU_74K;
765 __cpu_name[cpu] = "MIPS 74Kc";
714 break; 766 break;
715 case PRID_IMP_1004K: 767 case PRID_IMP_1004K:
716 c->cputype = CPU_1004K; 768 c->cputype = CPU_1004K;
769 __cpu_name[cpu] = "MIPS 1004Kc";
717 break; 770 break;
718 } 771 }
719 772
720 spram_config(); 773 spram_config();
721} 774}
722 775
723static inline void cpu_probe_alchemy(struct cpuinfo_mips *c) 776static inline void cpu_probe_alchemy(struct cpuinfo_mips *c, unsigned int cpu)
724{ 777{
725 decode_configs(c); 778 decode_configs(c);
726 switch (c->processor_id & 0xff00) { 779 switch (c->processor_id & 0xff00) {
@@ -729,23 +782,31 @@ static inline void cpu_probe_alchemy(struct cpuinfo_mips *c)
729 switch ((c->processor_id >> 24) & 0xff) { 782 switch ((c->processor_id >> 24) & 0xff) {
730 case 0: 783 case 0:
731 c->cputype = CPU_AU1000; 784 c->cputype = CPU_AU1000;
785 __cpu_name[cpu] = "Au1000";
732 break; 786 break;
733 case 1: 787 case 1:
734 c->cputype = CPU_AU1500; 788 c->cputype = CPU_AU1500;
789 __cpu_name[cpu] = "Au1500";
735 break; 790 break;
736 case 2: 791 case 2:
737 c->cputype = CPU_AU1100; 792 c->cputype = CPU_AU1100;
793 __cpu_name[cpu] = "Au1100";
738 break; 794 break;
739 case 3: 795 case 3:
740 c->cputype = CPU_AU1550; 796 c->cputype = CPU_AU1550;
797 __cpu_name[cpu] = "Au1550";
741 break; 798 break;
742 case 4: 799 case 4:
743 c->cputype = CPU_AU1200; 800 c->cputype = CPU_AU1200;
744 if (2 == (c->processor_id & 0xff)) 801 __cpu_name[cpu] = "Au1200";
802 if ((c->processor_id & 0xff) == 2) {
745 c->cputype = CPU_AU1250; 803 c->cputype = CPU_AU1250;
804 __cpu_name[cpu] = "Au1250";
805 }
746 break; 806 break;
747 case 5: 807 case 5:
748 c->cputype = CPU_AU1210; 808 c->cputype = CPU_AU1210;
809 __cpu_name[cpu] = "Au1210";
749 break; 810 break;
750 default: 811 default:
751 panic("Unknown Au Core!"); 812 panic("Unknown Au Core!");
@@ -755,154 +816,67 @@ static inline void cpu_probe_alchemy(struct cpuinfo_mips *c)
755 } 816 }
756} 817}
757 818
758static inline void cpu_probe_sibyte(struct cpuinfo_mips *c) 819static inline void cpu_probe_sibyte(struct cpuinfo_mips *c, unsigned int cpu)
759{ 820{
760 decode_configs(c); 821 decode_configs(c);
761 822
762 switch (c->processor_id & 0xff00) { 823 switch (c->processor_id & 0xff00) {
763 case PRID_IMP_SB1: 824 case PRID_IMP_SB1:
764 c->cputype = CPU_SB1; 825 c->cputype = CPU_SB1;
826 __cpu_name[cpu] = "SiByte SB1";
765 /* FPU in pass1 is known to have issues. */ 827 /* FPU in pass1 is known to have issues. */
766 if ((c->processor_id & 0xff) < 0x02) 828 if ((c->processor_id & 0xff) < 0x02)
767 c->options &= ~(MIPS_CPU_FPU | MIPS_CPU_32FPR); 829 c->options &= ~(MIPS_CPU_FPU | MIPS_CPU_32FPR);
768 break; 830 break;
769 case PRID_IMP_SB1A: 831 case PRID_IMP_SB1A:
770 c->cputype = CPU_SB1A; 832 c->cputype = CPU_SB1A;
833 __cpu_name[cpu] = "SiByte SB1A";
771 break; 834 break;
772 } 835 }
773} 836}
774 837
775static inline void cpu_probe_sandcraft(struct cpuinfo_mips *c) 838static inline void cpu_probe_sandcraft(struct cpuinfo_mips *c, unsigned int cpu)
776{ 839{
777 decode_configs(c); 840 decode_configs(c);
778 switch (c->processor_id & 0xff00) { 841 switch (c->processor_id & 0xff00) {
779 case PRID_IMP_SR71000: 842 case PRID_IMP_SR71000:
780 c->cputype = CPU_SR71000; 843 c->cputype = CPU_SR71000;
844 __cpu_name[cpu] = "Sandcraft SR71000";
781 c->scache.ways = 8; 845 c->scache.ways = 8;
782 c->tlbsize = 64; 846 c->tlbsize = 64;
783 break; 847 break;
784 } 848 }
785} 849}
786 850
787static inline void cpu_probe_nxp(struct cpuinfo_mips *c) 851static inline void cpu_probe_nxp(struct cpuinfo_mips *c, unsigned int cpu)
788{ 852{
789 decode_configs(c); 853 decode_configs(c);
790 switch (c->processor_id & 0xff00) { 854 switch (c->processor_id & 0xff00) {
791 case PRID_IMP_PR4450: 855 case PRID_IMP_PR4450:
792 c->cputype = CPU_PR4450; 856 c->cputype = CPU_PR4450;
857 __cpu_name[cpu] = "Philips PR4450";
793 c->isa_level = MIPS_CPU_ISA_M32R1; 858 c->isa_level = MIPS_CPU_ISA_M32R1;
794 break; 859 break;
795 default:
796 panic("Unknown NXP Core!"); /* REVISIT: die? */
797 break;
798 } 860 }
799} 861}
800 862
801 863static inline void cpu_probe_broadcom(struct cpuinfo_mips *c, unsigned int cpu)
802static inline void cpu_probe_broadcom(struct cpuinfo_mips *c)
803{ 864{
804 decode_configs(c); 865 decode_configs(c);
805 switch (c->processor_id & 0xff00) { 866 switch (c->processor_id & 0xff00) {
806 case PRID_IMP_BCM3302: 867 case PRID_IMP_BCM3302:
807 c->cputype = CPU_BCM3302; 868 c->cputype = CPU_BCM3302;
869 __cpu_name[cpu] = "Broadcom BCM3302";
808 break; 870 break;
809 case PRID_IMP_BCM4710: 871 case PRID_IMP_BCM4710:
810 c->cputype = CPU_BCM4710; 872 c->cputype = CPU_BCM4710;
811 break; 873 __cpu_name[cpu] = "Broadcom BCM4710";
812 default:
813 c->cputype = CPU_UNKNOWN;
814 break; 874 break;
815 } 875 }
816} 876}
817 877
818const char *__cpu_name[NR_CPUS]; 878const char *__cpu_name[NR_CPUS];
819 879
820/*
821 * Name a CPU
822 */
823static __cpuinit const char *cpu_to_name(struct cpuinfo_mips *c)
824{
825 const char *name = NULL;
826
827 switch (c->cputype) {
828 case CPU_UNKNOWN: name = "unknown"; break;
829 case CPU_R2000: name = "R2000"; break;
830 case CPU_R3000: name = "R3000"; break;
831 case CPU_R3000A: name = "R3000A"; break;
832 case CPU_R3041: name = "R3041"; break;
833 case CPU_R3051: name = "R3051"; break;
834 case CPU_R3052: name = "R3052"; break;
835 case CPU_R3081: name = "R3081"; break;
836 case CPU_R3081E: name = "R3081E"; break;
837 case CPU_R4000PC: name = "R4000PC"; break;
838 case CPU_R4000SC: name = "R4000SC"; break;
839 case CPU_R4000MC: name = "R4000MC"; break;
840 case CPU_R4200: name = "R4200"; break;
841 case CPU_R4400PC: name = "R4400PC"; break;
842 case CPU_R4400SC: name = "R4400SC"; break;
843 case CPU_R4400MC: name = "R4400MC"; break;
844 case CPU_R4600: name = "R4600"; break;
845 case CPU_R6000: name = "R6000"; break;
846 case CPU_R6000A: name = "R6000A"; break;
847 case CPU_R8000: name = "R8000"; break;
848 case CPU_R10000: name = "R10000"; break;
849 case CPU_R12000: name = "R12000"; break;
850 case CPU_R14000: name = "R14000"; break;
851 case CPU_R4300: name = "R4300"; break;
852 case CPU_R4650: name = "R4650"; break;
853 case CPU_R4700: name = "R4700"; break;
854 case CPU_R5000: name = "R5000"; break;
855 case CPU_R5000A: name = "R5000A"; break;
856 case CPU_R4640: name = "R4640"; break;
857 case CPU_NEVADA: name = "Nevada"; break;
858 case CPU_RM7000: name = "RM7000"; break;
859 case CPU_RM9000: name = "RM9000"; break;
860 case CPU_R5432: name = "R5432"; break;
861 case CPU_4KC: name = "MIPS 4Kc"; break;
862 case CPU_5KC: name = "MIPS 5Kc"; break;
863 case CPU_R4310: name = "R4310"; break;
864 case CPU_SB1: name = "SiByte SB1"; break;
865 case CPU_SB1A: name = "SiByte SB1A"; break;
866 case CPU_TX3912: name = "TX3912"; break;
867 case CPU_TX3922: name = "TX3922"; break;
868 case CPU_TX3927: name = "TX3927"; break;
869 case CPU_AU1000: name = "Au1000"; break;
870 case CPU_AU1500: name = "Au1500"; break;
871 case CPU_AU1100: name = "Au1100"; break;
872 case CPU_AU1550: name = "Au1550"; break;
873 case CPU_AU1200: name = "Au1200"; break;
874 case CPU_AU1210: name = "Au1210"; break;
875 case CPU_AU1250: name = "Au1250"; break;
876 case CPU_4KEC: name = "MIPS 4KEc"; break;
877 case CPU_4KSC: name = "MIPS 4KSc"; break;
878 case CPU_VR41XX: name = "NEC Vr41xx"; break;
879 case CPU_R5500: name = "R5500"; break;
880 case CPU_TX49XX: name = "TX49xx"; break;
881 case CPU_20KC: name = "MIPS 20Kc"; break;
882 case CPU_24K: name = "MIPS 24K"; break;
883 case CPU_25KF: name = "MIPS 25Kf"; break;
884 case CPU_34K: name = "MIPS 34K"; break;
885 case CPU_1004K: name = "MIPS 1004K"; break;
886 case CPU_74K: name = "MIPS 74K"; break;
887 case CPU_VR4111: name = "NEC VR4111"; break;
888 case CPU_VR4121: name = "NEC VR4121"; break;
889 case CPU_VR4122: name = "NEC VR4122"; break;
890 case CPU_VR4131: name = "NEC VR4131"; break;
891 case CPU_VR4133: name = "NEC VR4133"; break;
892 case CPU_VR4181: name = "NEC VR4181"; break;
893 case CPU_VR4181A: name = "NEC VR4181A"; break;
894 case CPU_SR71000: name = "Sandcraft SR71000"; break;
895 case CPU_BCM3302: name = "Broadcom BCM3302"; break;
896 case CPU_BCM4710: name = "Broadcom BCM4710"; break;
897 case CPU_PR4450: name = "Philips PR4450"; break;
898 case CPU_LOONGSON2: name = "ICT Loongson-2"; break;
899 default:
900 BUG();
901 }
902
903 return name;
904}
905
906__cpuinit void cpu_probe(void) 880__cpuinit void cpu_probe(void)
907{ 881{
908 struct cpuinfo_mips *c = &current_cpu_data; 882 struct cpuinfo_mips *c = &current_cpu_data;
@@ -915,30 +889,31 @@ __cpuinit void cpu_probe(void)
915 c->processor_id = read_c0_prid(); 889 c->processor_id = read_c0_prid();
916 switch (c->processor_id & 0xff0000) { 890 switch (c->processor_id & 0xff0000) {
917 case PRID_COMP_LEGACY: 891 case PRID_COMP_LEGACY:
918 cpu_probe_legacy(c); 892 cpu_probe_legacy(c, cpu);
919 break; 893 break;
920 case PRID_COMP_MIPS: 894 case PRID_COMP_MIPS:
921 cpu_probe_mips(c); 895 cpu_probe_mips(c, cpu);
922 break; 896 break;
923 case PRID_COMP_ALCHEMY: 897 case PRID_COMP_ALCHEMY:
924 cpu_probe_alchemy(c); 898 cpu_probe_alchemy(c, cpu);
925 break; 899 break;
926 case PRID_COMP_SIBYTE: 900 case PRID_COMP_SIBYTE:
927 cpu_probe_sibyte(c); 901 cpu_probe_sibyte(c, cpu);
928 break; 902 break;
929 case PRID_COMP_BROADCOM: 903 case PRID_COMP_BROADCOM:
930 cpu_probe_broadcom(c); 904 cpu_probe_broadcom(c, cpu);
931 break; 905 break;
932 case PRID_COMP_SANDCRAFT: 906 case PRID_COMP_SANDCRAFT:
933 cpu_probe_sandcraft(c); 907 cpu_probe_sandcraft(c, cpu);
934 break; 908 break;
935 case PRID_COMP_NXP: 909 case PRID_COMP_NXP:
936 cpu_probe_nxp(c); 910 cpu_probe_nxp(c, cpu);
937 break; 911 break;
938 default:
939 c->cputype = CPU_UNKNOWN;
940 } 912 }
941 913
914 BUG_ON(!__cpu_name[cpu]);
915 BUG_ON(c->cputype == CPU_UNKNOWN);
916
942 /* 917 /*
943 * Platform code can force the cpu type to optimize code 918 * Platform code can force the cpu type to optimize code
944 * generation. In that case be sure the cpu type is correctly 919 * generation. In that case be sure the cpu type is correctly
@@ -958,8 +933,6 @@ __cpuinit void cpu_probe(void)
958 } 933 }
959 } 934 }
960 935
961 __cpu_name[cpu] = cpu_to_name(c);
962
963 if (cpu_has_mips_r2) 936 if (cpu_has_mips_r2)
964 c->srsets = ((read_c0_srsctl() >> 26) & 0x0f) + 1; 937 c->srsets = ((read_c0_srsctl() >> 26) & 0x0f) + 1;
965 else 938 else
diff --git a/arch/mips/kernel/smp.c b/arch/mips/kernel/smp.c
index b79ea7055ec3..8bf88faf5afd 100644
--- a/arch/mips/kernel/smp.c
+++ b/arch/mips/kernel/smp.c
@@ -195,12 +195,6 @@ void __init smp_prepare_cpus(unsigned int max_cpus)
195/* preload SMP state for boot cpu */ 195/* preload SMP state for boot cpu */
196void __devinit smp_prepare_boot_cpu(void) 196void __devinit smp_prepare_boot_cpu(void)
197{ 197{
198 /*
199 * This assumes that bootup is always handled by the processor
200 * with the logic and physical number 0.
201 */
202 __cpu_number_map[0] = 0;
203 __cpu_logical_map[0] = 0;
204 cpu_set(0, phys_cpu_present_map); 198 cpu_set(0, phys_cpu_present_map);
205 cpu_set(0, cpu_online_map); 199 cpu_set(0, cpu_online_map);
206 cpu_set(0, cpu_callin_map); 200 cpu_set(0, cpu_callin_map);
diff --git a/arch/mips/kernel/traps.c b/arch/mips/kernel/traps.c
index 80b9e070c207..353056110f2b 100644
--- a/arch/mips/kernel/traps.c
+++ b/arch/mips/kernel/traps.c
@@ -32,6 +32,7 @@
32#include <asm/cpu.h> 32#include <asm/cpu.h>
33#include <asm/dsp.h> 33#include <asm/dsp.h>
34#include <asm/fpu.h> 34#include <asm/fpu.h>
35#include <asm/fpu_emulator.h>
35#include <asm/mipsregs.h> 36#include <asm/mipsregs.h>
36#include <asm/mipsmtregs.h> 37#include <asm/mipsmtregs.h>
37#include <asm/module.h> 38#include <asm/module.h>
@@ -722,6 +723,21 @@ static void do_trap_or_bp(struct pt_regs *regs, unsigned int code,
722 die_if_kernel("Kernel bug detected", regs); 723 die_if_kernel("Kernel bug detected", regs);
723 force_sig(SIGTRAP, current); 724 force_sig(SIGTRAP, current);
724 break; 725 break;
726 case BRK_MEMU:
727 /*
728 * Address errors may be deliberately induced by the FPU
729 * emulator to retake control of the CPU after executing the
730 * instruction in the delay slot of an emulated branch.
731 *
732 * Terminate if exception was recognized as a delay slot return
733 * otherwise handle as normal.
734 */
735 if (do_dsemulret(regs))
736 return;
737
738 die_if_kernel("Math emu break/trap", regs);
739 force_sig(SIGTRAP, current);
740 break;
725 default: 741 default:
726 scnprintf(b, sizeof(b), "%s instruction in kernel code", str); 742 scnprintf(b, sizeof(b), "%s instruction in kernel code", str);
727 die_if_kernel(b, regs); 743 die_if_kernel(b, regs);
@@ -1555,6 +1571,8 @@ void __cpuinit set_uncached_handler(unsigned long offset, void *addr,
1555#ifdef CONFIG_64BIT 1571#ifdef CONFIG_64BIT
1556 unsigned long uncached_ebase = TO_UNCAC(ebase); 1572 unsigned long uncached_ebase = TO_UNCAC(ebase);
1557#endif 1573#endif
1574 if (cpu_has_mips_r2)
1575 ebase += (read_c0_ebase() & 0x3ffff000);
1558 1576
1559 if (!addr) 1577 if (!addr)
1560 panic(panic_null_cerr); 1578 panic(panic_null_cerr);
@@ -1588,8 +1606,11 @@ void __init trap_init(void)
1588 1606
1589 if (cpu_has_veic || cpu_has_vint) 1607 if (cpu_has_veic || cpu_has_vint)
1590 ebase = (unsigned long) alloc_bootmem_low_pages(0x200 + VECTORSPACING*64); 1608 ebase = (unsigned long) alloc_bootmem_low_pages(0x200 + VECTORSPACING*64);
1591 else 1609 else {
1592 ebase = CAC_BASE; 1610 ebase = CAC_BASE;
1611 if (cpu_has_mips_r2)
1612 ebase += (read_c0_ebase() & 0x3ffff000);
1613 }
1593 1614
1594 per_cpu_trap_init(); 1615 per_cpu_trap_init();
1595 1616
@@ -1697,11 +1718,11 @@ void __init trap_init(void)
1697 1718
1698 if (cpu_has_vce) 1719 if (cpu_has_vce)
1699 /* Special exception: R4[04]00 uses also the divec space. */ 1720 /* Special exception: R4[04]00 uses also the divec space. */
1700 memcpy((void *)(CAC_BASE + 0x180), &except_vec3_r4000, 0x100); 1721 memcpy((void *)(ebase + 0x180), &except_vec3_r4000, 0x100);
1701 else if (cpu_has_4kex) 1722 else if (cpu_has_4kex)
1702 memcpy((void *)(CAC_BASE + 0x180), &except_vec3_generic, 0x80); 1723 memcpy((void *)(ebase + 0x180), &except_vec3_generic, 0x80);
1703 else 1724 else
1704 memcpy((void *)(CAC_BASE + 0x080), &except_vec3_generic, 0x80); 1725 memcpy((void *)(ebase + 0x080), &except_vec3_generic, 0x80);
1705 1726
1706 signal_init(); 1727 signal_init();
1707#ifdef CONFIG_MIPS32_COMPAT 1728#ifdef CONFIG_MIPS32_COMPAT
diff --git a/arch/mips/kernel/unaligned.c b/arch/mips/kernel/unaligned.c
index 20709669e592..bf4c4a979abb 100644
--- a/arch/mips/kernel/unaligned.c
+++ b/arch/mips/kernel/unaligned.c
@@ -499,22 +499,10 @@ sigill:
499 499
500asmlinkage void do_ade(struct pt_regs *regs) 500asmlinkage void do_ade(struct pt_regs *regs)
501{ 501{
502 extern int do_dsemulret(struct pt_regs *);
503 unsigned int __user *pc; 502 unsigned int __user *pc;
504 mm_segment_t seg; 503 mm_segment_t seg;
505 504
506 /* 505 /*
507 * Address errors may be deliberately induced by the FPU emulator to
508 * retake control of the CPU after executing the instruction in the
509 * delay slot of an emulated branch.
510 */
511 /* Terminate if exception was recognized as a delay slot return */
512 if (do_dsemulret(regs))
513 return;
514
515 /* Otherwise handle as normal */
516
517 /*
518 * Did we catch a fault trying to load an instruction? 506 * Did we catch a fault trying to load an instruction?
519 * Or are we running in MIPS16 mode? 507 * Or are we running in MIPS16 mode?
520 */ 508 */
diff --git a/arch/mips/math-emu/cp1emu.c b/arch/mips/math-emu/cp1emu.c
index 7ec0b217dfd3..890f77927d62 100644
--- a/arch/mips/math-emu/cp1emu.c
+++ b/arch/mips/math-emu/cp1emu.c
@@ -48,7 +48,6 @@
48#include <asm/branch.h> 48#include <asm/branch.h>
49 49
50#include "ieee754.h" 50#include "ieee754.h"
51#include "dsemul.h"
52 51
53/* Strap kernel emulator for full MIPS IV emulation */ 52/* Strap kernel emulator for full MIPS IV emulation */
54 53
@@ -346,9 +345,6 @@ static int cop1Emulate(struct pt_regs *xcp, struct mips_fpu_struct *ctx)
346 /* cop control register rd -> gpr[rt] */ 345 /* cop control register rd -> gpr[rt] */
347 u32 value; 346 u32 value;
348 347
349 if (ir == CP1UNDEF) {
350 return do_dsemulret(xcp);
351 }
352 if (MIPSInst_RD(ir) == FPCREG_CSR) { 348 if (MIPSInst_RD(ir) == FPCREG_CSR) {
353 value = ctx->fcr31; 349 value = ctx->fcr31;
354 value = (value & ~0x3) | mips_rm[value & 0x3]; 350 value = (value & ~0x3) | mips_rm[value & 0x3];
diff --git a/arch/mips/math-emu/dsemul.c b/arch/mips/math-emu/dsemul.c
index 653e325849e4..df7b9d928efc 100644
--- a/arch/mips/math-emu/dsemul.c
+++ b/arch/mips/math-emu/dsemul.c
@@ -18,7 +18,6 @@
18#include <asm/fpu_emulator.h> 18#include <asm/fpu_emulator.h>
19 19
20#include "ieee754.h" 20#include "ieee754.h"
21#include "dsemul.h"
22 21
23/* Strap kernel emulator for full MIPS IV emulation */ 22/* Strap kernel emulator for full MIPS IV emulation */
24 23
@@ -94,7 +93,7 @@ int mips_dsemul(struct pt_regs *regs, mips_instruction ir, unsigned long cpc)
94 return SIGBUS; 93 return SIGBUS;
95 94
96 err = __put_user(ir, &fr->emul); 95 err = __put_user(ir, &fr->emul);
97 err |= __put_user((mips_instruction)BADINST, &fr->badinst); 96 err |= __put_user((mips_instruction)BREAK_MATH, &fr->badinst);
98 err |= __put_user((mips_instruction)BD_COOKIE, &fr->cookie); 97 err |= __put_user((mips_instruction)BD_COOKIE, &fr->cookie);
99 err |= __put_user(cpc, &fr->epc); 98 err |= __put_user(cpc, &fr->epc);
100 99
@@ -130,13 +129,13 @@ int do_dsemulret(struct pt_regs *xcp)
130 /* 129 /*
131 * Do some sanity checking on the stackframe: 130 * Do some sanity checking on the stackframe:
132 * 131 *
133 * - Is the instruction pointed to by the EPC an BADINST? 132 * - Is the instruction pointed to by the EPC an BREAK_MATH?
134 * - Is the following memory word the BD_COOKIE? 133 * - Is the following memory word the BD_COOKIE?
135 */ 134 */
136 err = __get_user(insn, &fr->badinst); 135 err = __get_user(insn, &fr->badinst);
137 err |= __get_user(cookie, &fr->cookie); 136 err |= __get_user(cookie, &fr->cookie);
138 137
139 if (unlikely(err || (insn != BADINST) || (cookie != BD_COOKIE))) { 138 if (unlikely(err || (insn != BREAK_MATH) || (cookie != BD_COOKIE))) {
140 fpuemustats.errors++; 139 fpuemustats.errors++;
141 return 0; 140 return 0;
142 } 141 }
diff --git a/arch/mips/math-emu/dsemul.h b/arch/mips/math-emu/dsemul.h
deleted file mode 100644
index 091f0e76730f..000000000000
--- a/arch/mips/math-emu/dsemul.h
+++ /dev/null
@@ -1,17 +0,0 @@
1extern int mips_dsemul(struct pt_regs *regs, mips_instruction ir, unsigned long cpc);
2extern int do_dsemulret(struct pt_regs *xcp);
3
4/* Instruction which will always cause an address error */
5#define AdELOAD 0x8c000001 /* lw $0,1($0) */
6/* Instruction which will plainly cause a CP1 exception when FPU is disabled */
7#define CP1UNDEF 0x44400001 /* cfc1 $0,$0 undef */
8
9/* Instruction inserted following the badinst to further tag the sequence */
10#define BD_COOKIE 0x0000bd36 /* tne $0,$0 with baggage */
11
12/* Setup which instruction to use for trampoline */
13#ifdef STANDALONE_EMULATOR
14#define BADINST CP1UNDEF
15#else
16#define BADINST AdELOAD
17#endif
diff --git a/arch/mips/txx9/rbtx4927/setup.c b/arch/mips/txx9/rbtx4927/setup.c
index 4a74423b2ba8..01129a9d50fa 100644
--- a/arch/mips/txx9/rbtx4927/setup.c
+++ b/arch/mips/txx9/rbtx4927/setup.c
@@ -49,6 +49,7 @@
49#include <linux/platform_device.h> 49#include <linux/platform_device.h>
50#include <linux/delay.h> 50#include <linux/delay.h>
51#include <linux/gpio.h> 51#include <linux/gpio.h>
52#include <linux/leds.h>
52#include <asm/io.h> 53#include <asm/io.h>
53#include <asm/reboot.h> 54#include <asm/reboot.h>
54#include <asm/txx9/generic.h> 55#include <asm/txx9/generic.h>
@@ -210,10 +211,6 @@ static void __init rbtx4927_mem_setup(void)
210 /* TX4927-SIO DTR on (PIO[15]) */ 211 /* TX4927-SIO DTR on (PIO[15]) */
211 gpio_request(15, "sio-dtr"); 212 gpio_request(15, "sio-dtr");
212 gpio_direction_output(15, 1); 213 gpio_direction_output(15, 1);
213 gpio_request(0, "led");
214 gpio_direction_output(0, 1);
215 gpio_request(1, "led");
216 gpio_direction_output(1, 1);
217 214
218 tx4927_sio_init(0, 0); 215 tx4927_sio_init(0, 0);
219#ifdef CONFIG_SERIAL_TXX9_CONSOLE 216#ifdef CONFIG_SERIAL_TXX9_CONSOLE
@@ -315,6 +312,25 @@ static void __init rbtx4927_mtd_init(void)
315 tx4927_mtd_init(i); 312 tx4927_mtd_init(i);
316} 313}
317 314
315static void __init rbtx4927_gpioled_init(void)
316{
317 static struct gpio_led leds[] = {
318 { .name = "gpioled:green:0", .gpio = 0, .active_low = 1, },
319 { .name = "gpioled:green:1", .gpio = 1, .active_low = 1, },
320 };
321 static struct gpio_led_platform_data pdata = {
322 .num_leds = ARRAY_SIZE(leds),
323 .leds = leds,
324 };
325 struct platform_device *pdev = platform_device_alloc("leds-gpio", 0);
326
327 if (!pdev)
328 return;
329 pdev->dev.platform_data = &pdata;
330 if (platform_device_add(pdev))
331 platform_device_put(pdev);
332}
333
318static void __init rbtx4927_device_init(void) 334static void __init rbtx4927_device_init(void)
319{ 335{
320 toshiba_rbtx4927_rtc_init(); 336 toshiba_rbtx4927_rtc_init();
@@ -322,6 +338,7 @@ static void __init rbtx4927_device_init(void)
322 tx4927_wdt_init(); 338 tx4927_wdt_init();
323 rbtx4927_mtd_init(); 339 rbtx4927_mtd_init();
324 txx9_iocled_init(RBTX4927_LED_ADDR - IO_BASE, -1, 3, 1, "green", NULL); 340 txx9_iocled_init(RBTX4927_LED_ADDR - IO_BASE, -1, 3, 1, "green", NULL);
341 rbtx4927_gpioled_init();
325} 342}
326 343
327struct txx9_board_vec rbtx4927_vec __initdata = { 344struct txx9_board_vec rbtx4927_vec __initdata = {
diff --git a/arch/mips/txx9/rbtx4939/setup.c b/arch/mips/txx9/rbtx4939/setup.c
index 6daee9b1cd5e..98fbd9391bf8 100644
--- a/arch/mips/txx9/rbtx4939/setup.c
+++ b/arch/mips/txx9/rbtx4939/setup.c
@@ -308,16 +308,22 @@ static void __init rbtx4939_device_init(void)
308#if defined(CONFIG_TC35815) || defined(CONFIG_TC35815_MODULE) 308#if defined(CONFIG_TC35815) || defined(CONFIG_TC35815_MODULE)
309 int i, j; 309 int i, j;
310 unsigned char ethaddr[2][6]; 310 unsigned char ethaddr[2][6];
311 u8 bdipsw = readb(rbtx4939_bdipsw_addr) & 0x0f;
312
311 for (i = 0; i < 2; i++) { 313 for (i = 0; i < 2; i++) {
312 unsigned long area = CKSEG1 + 0x1fff0000 + (i * 0x10); 314 unsigned long area = CKSEG1 + 0x1fff0000 + (i * 0x10);
313 if (readb(rbtx4939_bdipsw_addr) & 8) { 315 if (bdipsw == 0)
316 memcpy(ethaddr[i], (void *)area, 6);
317 else {
314 u16 buf[3]; 318 u16 buf[3];
315 area -= 0x03000000; 319 if (bdipsw & 8)
320 area -= 0x03000000;
321 else
322 area -= 0x01000000;
316 for (j = 0; j < 3; j++) 323 for (j = 0; j < 3; j++)
317 buf[j] = le16_to_cpup((u16 *)(area + j * 2)); 324 buf[j] = le16_to_cpup((u16 *)(area + j * 2));
318 memcpy(ethaddr[i], buf, 6); 325 memcpy(ethaddr[i], buf, 6);
319 } else 326 }
320 memcpy(ethaddr[i], (void *)area, 6);
321 } 327 }
322 tx4939_ethaddr_init(ethaddr[0], ethaddr[1]); 328 tx4939_ethaddr_init(ethaddr[0], ethaddr[1]);
323#endif 329#endif
diff --git a/drivers/char/Kconfig b/drivers/char/Kconfig
index 122254155ae1..43b35d0369d6 100644
--- a/drivers/char/Kconfig
+++ b/drivers/char/Kconfig
@@ -812,28 +812,6 @@ config JS_RTC
812 To compile this driver as a module, choose M here: the 812 To compile this driver as a module, choose M here: the
813 module will be called js-rtc. 813 module will be called js-rtc.
814 814
815config SGI_DS1286
816 tristate "SGI DS1286 RTC support"
817 depends on SGI_HAS_DS1286
818 help
819 If you say Y here and create a character special file /dev/rtc with
820 major number 10 and minor number 135 using mknod ("man mknod"), you
821 will get access to the real time clock built into your computer.
822 Every SGI has such a clock built in. It reports status information
823 via the file /proc/rtc and its behaviour is set by various ioctls on
824 /dev/rtc.
825
826config SGI_IP27_RTC
827 bool "SGI M48T35 RTC support"
828 depends on SGI_IP27
829 help
830 If you say Y here and create a character special file /dev/rtc with
831 major number 10 and minor number 135 using mknod ("man mknod"), you
832 will get access to the real time clock built into your computer.
833 Every SGI has such a clock built in. It reports status information
834 via the file /proc/rtc and its behaviour is set by various ioctls on
835 /dev/rtc.
836
837config GEN_RTC 815config GEN_RTC
838 tristate "Generic /dev/rtc emulation" 816 tristate "Generic /dev/rtc emulation"
839 depends on RTC!=y && !IA64 && !ARM && !M32R && !MIPS && !SPARC && !FRV && !S390 && !SUPERH && !AVR32 817 depends on RTC!=y && !IA64 && !ARM && !M32R && !MIPS && !SPARC && !FRV && !S390 && !SUPERH && !AVR32
diff --git a/drivers/char/Makefile b/drivers/char/Makefile
index 1a4247dccac4..438f71317c5c 100644
--- a/drivers/char/Makefile
+++ b/drivers/char/Makefile
@@ -74,8 +74,6 @@ obj-$(CONFIG_RTC) += rtc.o
74obj-$(CONFIG_HPET) += hpet.o 74obj-$(CONFIG_HPET) += hpet.o
75obj-$(CONFIG_GEN_RTC) += genrtc.o 75obj-$(CONFIG_GEN_RTC) += genrtc.o
76obj-$(CONFIG_EFI_RTC) += efirtc.o 76obj-$(CONFIG_EFI_RTC) += efirtc.o
77obj-$(CONFIG_SGI_DS1286) += ds1286.o
78obj-$(CONFIG_SGI_IP27_RTC) += ip27-rtc.o
79obj-$(CONFIG_DS1302) += ds1302.o 77obj-$(CONFIG_DS1302) += ds1302.o
80obj-$(CONFIG_XILINX_HWICAP) += xilinx_hwicap/ 78obj-$(CONFIG_XILINX_HWICAP) += xilinx_hwicap/
81ifeq ($(CONFIG_GENERIC_NVRAM),y) 79ifeq ($(CONFIG_GENERIC_NVRAM),y)
diff --git a/drivers/char/ds1286.c b/drivers/char/ds1286.c
deleted file mode 100644
index 0a826d7be10e..000000000000
--- a/drivers/char/ds1286.c
+++ /dev/null
@@ -1,585 +0,0 @@
1/*
2 * DS1286 Real Time Clock interface for Linux
3 *
4 * Copyright (C) 1998, 1999, 2000 Ralf Baechle
5 *
6 * Based on code written by Paul Gortmaker.
7 *
8 * This driver allows use of the real time clock (built into nearly all
9 * computers) from user space. It exports the /dev/rtc interface supporting
10 * various ioctl() and also the /proc/rtc pseudo-file for status
11 * information.
12 *
13 * The ioctls can be used to set the interrupt behaviour and generation rate
14 * from the RTC via IRQ 8. Then the /dev/rtc interface can be used to make
15 * use of these timer interrupts, be they interval or alarm based.
16 *
17 * The /dev/rtc interface will block on reads until an interrupt has been
18 * received. If a RTC interrupt has already happened, it will output an
19 * unsigned long and then block. The output value contains the interrupt
20 * status in the low byte and the number of interrupts since the last read
21 * in the remaining high bytes. The /dev/rtc interface can also be used with
22 * the select(2) call.
23 *
24 * This program is free software; you can redistribute it and/or modify it
25 * under the terms of the GNU General Public License as published by the
26 * Free Software Foundation; either version 2 of the License, or (at your
27 * option) any later version.
28 */
29#include <linux/ds1286.h>
30#include <linux/smp_lock.h>
31#include <linux/types.h>
32#include <linux/errno.h>
33#include <linux/miscdevice.h>
34#include <linux/slab.h>
35#include <linux/ioport.h>
36#include <linux/fcntl.h>
37#include <linux/init.h>
38#include <linux/poll.h>
39#include <linux/rtc.h>
40#include <linux/spinlock.h>
41#include <linux/bcd.h>
42#include <linux/proc_fs.h>
43#include <linux/jiffies.h>
44
45#include <asm/uaccess.h>
46#include <asm/system.h>
47
48#define DS1286_VERSION "1.0"
49
50/*
51 * We sponge a minor off of the misc major. No need slurping
52 * up another valuable major dev number for this. If you add
53 * an ioctl, make sure you don't conflict with SPARC's RTC
54 * ioctls.
55 */
56
57static DECLARE_WAIT_QUEUE_HEAD(ds1286_wait);
58
59static ssize_t ds1286_read(struct file *file, char *buf,
60 size_t count, loff_t *ppos);
61
62static int ds1286_ioctl(struct inode *inode, struct file *file,
63 unsigned int cmd, unsigned long arg);
64
65static unsigned int ds1286_poll(struct file *file, poll_table *wait);
66
67static void ds1286_get_alm_time (struct rtc_time *alm_tm);
68static void ds1286_get_time(struct rtc_time *rtc_tm);
69static int ds1286_set_time(struct rtc_time *rtc_tm);
70
71static inline unsigned char ds1286_is_updating(void);
72
73static DEFINE_SPINLOCK(ds1286_lock);
74
75static int ds1286_read_proc(char *page, char **start, off_t off,
76 int count, int *eof, void *data);
77
78/*
79 * Bits in rtc_status. (7 bits of room for future expansion)
80 */
81
82#define RTC_IS_OPEN 0x01 /* means /dev/rtc is in use */
83#define RTC_TIMER_ON 0x02 /* missed irq timer active */
84
85static unsigned char ds1286_status; /* bitmapped status byte. */
86
87static unsigned char days_in_mo[] = {
88 0, 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31
89};
90
91/*
92 * Now all the various file operations that we export.
93 */
94
95static ssize_t ds1286_read(struct file *file, char *buf,
96 size_t count, loff_t *ppos)
97{
98 return -EIO;
99}
100
101static int ds1286_ioctl(struct inode *inode, struct file *file,
102 unsigned int cmd, unsigned long arg)
103{
104 struct rtc_time wtime;
105
106 switch (cmd) {
107 case RTC_AIE_OFF: /* Mask alarm int. enab. bit */
108 {
109 unsigned long flags;
110 unsigned char val;
111
112 if (!capable(CAP_SYS_TIME))
113 return -EACCES;
114
115 spin_lock_irqsave(&ds1286_lock, flags);
116 val = rtc_read(RTC_CMD);
117 val |= RTC_TDM;
118 rtc_write(val, RTC_CMD);
119 spin_unlock_irqrestore(&ds1286_lock, flags);
120
121 return 0;
122 }
123 case RTC_AIE_ON: /* Allow alarm interrupts. */
124 {
125 unsigned long flags;
126 unsigned char val;
127
128 if (!capable(CAP_SYS_TIME))
129 return -EACCES;
130
131 spin_lock_irqsave(&ds1286_lock, flags);
132 val = rtc_read(RTC_CMD);
133 val &= ~RTC_TDM;
134 rtc_write(val, RTC_CMD);
135 spin_unlock_irqrestore(&ds1286_lock, flags);
136
137 return 0;
138 }
139 case RTC_WIE_OFF: /* Mask watchdog int. enab. bit */
140 {
141 unsigned long flags;
142 unsigned char val;
143
144 if (!capable(CAP_SYS_TIME))
145 return -EACCES;
146
147 spin_lock_irqsave(&ds1286_lock, flags);
148 val = rtc_read(RTC_CMD);
149 val |= RTC_WAM;
150 rtc_write(val, RTC_CMD);
151 spin_unlock_irqrestore(&ds1286_lock, flags);
152
153 return 0;
154 }
155 case RTC_WIE_ON: /* Allow watchdog interrupts. */
156 {
157 unsigned long flags;
158 unsigned char val;
159
160 if (!capable(CAP_SYS_TIME))
161 return -EACCES;
162
163 spin_lock_irqsave(&ds1286_lock, flags);
164 val = rtc_read(RTC_CMD);
165 val &= ~RTC_WAM;
166 rtc_write(val, RTC_CMD);
167 spin_unlock_irqrestore(&ds1286_lock, flags);
168
169 return 0;
170 }
171 case RTC_ALM_READ: /* Read the present alarm time */
172 {
173 /*
174 * This returns a struct rtc_time. Reading >= 0xc0
175 * means "don't care" or "match all". Only the tm_hour,
176 * tm_min, and tm_sec values are filled in.
177 */
178
179 memset(&wtime, 0, sizeof(wtime));
180 ds1286_get_alm_time(&wtime);
181 break;
182 }
183 case RTC_ALM_SET: /* Store a time into the alarm */
184 {
185 /*
186 * This expects a struct rtc_time. Writing 0xff means
187 * "don't care" or "match all". Only the tm_hour,
188 * tm_min and tm_sec are used.
189 */
190 unsigned char hrs, min, sec;
191 struct rtc_time alm_tm;
192
193 if (!capable(CAP_SYS_TIME))
194 return -EACCES;
195
196 if (copy_from_user(&alm_tm, (struct rtc_time*)arg,
197 sizeof(struct rtc_time)))
198 return -EFAULT;
199
200 hrs = alm_tm.tm_hour;
201 min = alm_tm.tm_min;
202 sec = alm_tm.tm_sec;
203
204 if (hrs >= 24)
205 hrs = 0xff;
206
207 if (min >= 60)
208 min = 0xff;
209
210 if (sec != 0)
211 return -EINVAL;
212
213 min = bin2bcd(min);
214 min = bin2bcd(hrs);
215
216 spin_lock(&ds1286_lock);
217 rtc_write(hrs, RTC_HOURS_ALARM);
218 rtc_write(min, RTC_MINUTES_ALARM);
219 spin_unlock(&ds1286_lock);
220
221 return 0;
222 }
223 case RTC_RD_TIME: /* Read the time/date from RTC */
224 {
225 memset(&wtime, 0, sizeof(wtime));
226 ds1286_get_time(&wtime);
227 break;
228 }
229 case RTC_SET_TIME: /* Set the RTC */
230 {
231 struct rtc_time rtc_tm;
232
233 if (!capable(CAP_SYS_TIME))
234 return -EACCES;
235
236 if (copy_from_user(&rtc_tm, (struct rtc_time*)arg,
237 sizeof(struct rtc_time)))
238 return -EFAULT;
239
240 return ds1286_set_time(&rtc_tm);
241 }
242 default:
243 return -EINVAL;
244 }
245 return copy_to_user((void *)arg, &wtime, sizeof wtime) ? -EFAULT : 0;
246}
247
248/*
249 * We enforce only one user at a time here with the open/close.
250 * Also clear the previous interrupt data on an open, and clean
251 * up things on a close.
252 */
253
254static int ds1286_open(struct inode *inode, struct file *file)
255{
256 lock_kernel();
257 spin_lock_irq(&ds1286_lock);
258
259 if (ds1286_status & RTC_IS_OPEN)
260 goto out_busy;
261
262 ds1286_status |= RTC_IS_OPEN;
263
264 spin_unlock_irq(&ds1286_lock);
265 unlock_kernel();
266 return 0;
267
268out_busy:
269 spin_lock_irq(&ds1286_lock);
270 unlock_kernel();
271 return -EBUSY;
272}
273
274static int ds1286_release(struct inode *inode, struct file *file)
275{
276 ds1286_status &= ~RTC_IS_OPEN;
277
278 return 0;
279}
280
281static unsigned int ds1286_poll(struct file *file, poll_table *wait)
282{
283 poll_wait(file, &ds1286_wait, wait);
284
285 return 0;
286}
287
288/*
289 * The various file operations we support.
290 */
291
292static const struct file_operations ds1286_fops = {
293 .llseek = no_llseek,
294 .read = ds1286_read,
295 .poll = ds1286_poll,
296 .ioctl = ds1286_ioctl,
297 .open = ds1286_open,
298 .release = ds1286_release,
299};
300
301static struct miscdevice ds1286_dev=
302{
303 .minor = RTC_MINOR,
304 .name = "rtc",
305 .fops = &ds1286_fops,
306};
307
308static int __init ds1286_init(void)
309{
310 int err;
311
312 printk(KERN_INFO "DS1286 Real Time Clock Driver v%s\n", DS1286_VERSION);
313
314 err = misc_register(&ds1286_dev);
315 if (err)
316 goto out;
317
318 if (!create_proc_read_entry("driver/rtc", 0, 0, ds1286_read_proc, NULL)) {
319 err = -ENOMEM;
320
321 goto out_deregister;
322 }
323
324 return 0;
325
326out_deregister:
327 misc_deregister(&ds1286_dev);
328
329out:
330 return err;
331}
332
333static void __exit ds1286_exit(void)
334{
335 remove_proc_entry("driver/rtc", NULL);
336 misc_deregister(&ds1286_dev);
337}
338
339static char *days[] = {
340 "***", "Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"
341};
342
343/*
344 * Info exported via "/proc/rtc".
345 */
346static int ds1286_proc_output(char *buf)
347{
348 char *p, *s;
349 struct rtc_time tm;
350 unsigned char hundredth, month, cmd, amode;
351
352 p = buf;
353
354 ds1286_get_time(&tm);
355 hundredth = rtc_read(RTC_HUNDREDTH_SECOND);
356 hundredth = bcd2bin(hundredth);
357
358 p += sprintf(p,
359 "rtc_time\t: %02d:%02d:%02d.%02d\n"
360 "rtc_date\t: %04d-%02d-%02d\n",
361 tm.tm_hour, tm.tm_min, tm.tm_sec, hundredth,
362 tm.tm_year + 1900, tm.tm_mon + 1, tm.tm_mday);
363
364 /*
365 * We implicitly assume 24hr mode here. Alarm values >= 0xc0 will
366 * match any value for that particular field. Values that are
367 * greater than a valid time, but less than 0xc0 shouldn't appear.
368 */
369 ds1286_get_alm_time(&tm);
370 p += sprintf(p, "alarm\t\t: %s ", days[tm.tm_wday]);
371 if (tm.tm_hour <= 24)
372 p += sprintf(p, "%02d:", tm.tm_hour);
373 else
374 p += sprintf(p, "**:");
375
376 if (tm.tm_min <= 59)
377 p += sprintf(p, "%02d\n", tm.tm_min);
378 else
379 p += sprintf(p, "**\n");
380
381 month = rtc_read(RTC_MONTH);
382 p += sprintf(p,
383 "oscillator\t: %s\n"
384 "square_wave\t: %s\n",
385 (month & RTC_EOSC) ? "disabled" : "enabled",
386 (month & RTC_ESQW) ? "disabled" : "enabled");
387
388 amode = ((rtc_read(RTC_MINUTES_ALARM) & 0x80) >> 5) |
389 ((rtc_read(RTC_HOURS_ALARM) & 0x80) >> 6) |
390 ((rtc_read(RTC_DAY_ALARM) & 0x80) >> 7);
391 if (amode == 7) s = "each minute";
392 else if (amode == 3) s = "minutes match";
393 else if (amode == 1) s = "hours and minutes match";
394 else if (amode == 0) s = "days, hours and minutes match";
395 else s = "invalid";
396 p += sprintf(p, "alarm_mode\t: %s\n", s);
397
398 cmd = rtc_read(RTC_CMD);
399 p += sprintf(p,
400 "alarm_enable\t: %s\n"
401 "wdog_alarm\t: %s\n"
402 "alarm_mask\t: %s\n"
403 "wdog_alarm_mask\t: %s\n"
404 "interrupt_mode\t: %s\n"
405 "INTB_mode\t: %s_active\n"
406 "interrupt_pins\t: %s\n",
407 (cmd & RTC_TDF) ? "yes" : "no",
408 (cmd & RTC_WAF) ? "yes" : "no",
409 (cmd & RTC_TDM) ? "disabled" : "enabled",
410 (cmd & RTC_WAM) ? "disabled" : "enabled",
411 (cmd & RTC_PU_LVL) ? "pulse" : "level",
412 (cmd & RTC_IBH_LO) ? "low" : "high",
413 (cmd & RTC_IPSW) ? "unswapped" : "swapped");
414
415 return p - buf;
416}
417
418static int ds1286_read_proc(char *page, char **start, off_t off,
419 int count, int *eof, void *data)
420{
421 int len = ds1286_proc_output (page);
422 if (len <= off+count) *eof = 1;
423 *start = page + off;
424 len -= off;
425 if (len>count)
426 len = count;
427 if (len<0)
428 len = 0;
429
430 return len;
431}
432
433/*
434 * Returns true if a clock update is in progress
435 */
436static inline unsigned char ds1286_is_updating(void)
437{
438 return rtc_read(RTC_CMD) & RTC_TE;
439}
440
441
442static void ds1286_get_time(struct rtc_time *rtc_tm)
443{
444 unsigned char save_control;
445 unsigned long flags;
446
447 /*
448 * read RTC once any update in progress is done. The update
449 * can take just over 2ms. We wait 10 to 20ms. There is no need to
450 * to poll-wait (up to 1s - eeccch) for the falling edge of RTC_UIP.
451 * If you need to know *exactly* when a second has started, enable
452 * periodic update complete interrupts, (via ioctl) and then
453 * immediately read /dev/rtc which will block until you get the IRQ.
454 * Once the read clears, read the RTC time (again via ioctl). Easy.
455 */
456
457 if (ds1286_is_updating() != 0)
458 msleep(20);
459
460 /*
461 * Only the values that we read from the RTC are set. We leave
462 * tm_wday, tm_yday and tm_isdst untouched. Even though the
463 * RTC has RTC_DAY_OF_WEEK, we ignore it, as it is only updated
464 * by the RTC when initially set to a non-zero value.
465 */
466 spin_lock_irqsave(&ds1286_lock, flags);
467 save_control = rtc_read(RTC_CMD);
468 rtc_write((save_control|RTC_TE), RTC_CMD);
469
470 rtc_tm->tm_sec = rtc_read(RTC_SECONDS);
471 rtc_tm->tm_min = rtc_read(RTC_MINUTES);
472 rtc_tm->tm_hour = rtc_read(RTC_HOURS) & 0x3f;
473 rtc_tm->tm_mday = rtc_read(RTC_DATE);
474 rtc_tm->tm_mon = rtc_read(RTC_MONTH) & 0x1f;
475 rtc_tm->tm_year = rtc_read(RTC_YEAR);
476
477 rtc_write(save_control, RTC_CMD);
478 spin_unlock_irqrestore(&ds1286_lock, flags);
479
480 rtc_tm->tm_sec = bcd2bin(rtc_tm->tm_sec);
481 rtc_tm->tm_min = bcd2bin(rtc_tm->tm_min);
482 rtc_tm->tm_hour = bcd2bin(rtc_tm->tm_hour);
483 rtc_tm->tm_mday = bcd2bin(rtc_tm->tm_mday);
484 rtc_tm->tm_mon = bcd2bin(rtc_tm->tm_mon);
485 rtc_tm->tm_year = bcd2bin(rtc_tm->tm_year);
486
487 /*
488 * Account for differences between how the RTC uses the values
489 * and how they are defined in a struct rtc_time;
490 */
491 if (rtc_tm->tm_year < 45)
492 rtc_tm->tm_year += 30;
493 if ((rtc_tm->tm_year += 40) < 70)
494 rtc_tm->tm_year += 100;
495
496 rtc_tm->tm_mon--;
497}
498
499static int ds1286_set_time(struct rtc_time *rtc_tm)
500{
501 unsigned char mon, day, hrs, min, sec, leap_yr;
502 unsigned char save_control;
503 unsigned int yrs;
504 unsigned long flags;
505
506
507 yrs = rtc_tm->tm_year + 1900;
508 mon = rtc_tm->tm_mon + 1; /* tm_mon starts at zero */
509 day = rtc_tm->tm_mday;
510 hrs = rtc_tm->tm_hour;
511 min = rtc_tm->tm_min;
512 sec = rtc_tm->tm_sec;
513
514 if (yrs < 1970)
515 return -EINVAL;
516
517 leap_yr = ((!(yrs % 4) && (yrs % 100)) || !(yrs % 400));
518
519 if ((mon > 12) || (day == 0))
520 return -EINVAL;
521
522 if (day > (days_in_mo[mon] + ((mon == 2) && leap_yr)))
523 return -EINVAL;
524
525 if ((hrs >= 24) || (min >= 60) || (sec >= 60))
526 return -EINVAL;
527
528 if ((yrs -= 1940) > 255) /* They are unsigned */
529 return -EINVAL;
530
531 if (yrs >= 100)
532 yrs -= 100;
533
534 sec = bin2bcd(sec);
535 min = bin2bcd(min);
536 hrs = bin2bcd(hrs);
537 day = bin2bcd(day);
538 mon = bin2bcd(mon);
539 yrs = bin2bcd(yrs);
540
541 spin_lock_irqsave(&ds1286_lock, flags);
542 save_control = rtc_read(RTC_CMD);
543 rtc_write((save_control|RTC_TE), RTC_CMD);
544
545 rtc_write(yrs, RTC_YEAR);
546 rtc_write(mon, RTC_MONTH);
547 rtc_write(day, RTC_DATE);
548 rtc_write(hrs, RTC_HOURS);
549 rtc_write(min, RTC_MINUTES);
550 rtc_write(sec, RTC_SECONDS);
551 rtc_write(0, RTC_HUNDREDTH_SECOND);
552
553 rtc_write(save_control, RTC_CMD);
554 spin_unlock_irqrestore(&ds1286_lock, flags);
555
556 return 0;
557}
558
559static void ds1286_get_alm_time(struct rtc_time *alm_tm)
560{
561 unsigned char cmd;
562 unsigned long flags;
563
564 /*
565 * Only the values that we read from the RTC are set. That
566 * means only tm_wday, tm_hour, tm_min.
567 */
568 spin_lock_irqsave(&ds1286_lock, flags);
569 alm_tm->tm_min = rtc_read(RTC_MINUTES_ALARM) & 0x7f;
570 alm_tm->tm_hour = rtc_read(RTC_HOURS_ALARM) & 0x1f;
571 alm_tm->tm_wday = rtc_read(RTC_DAY_ALARM) & 0x07;
572 cmd = rtc_read(RTC_CMD);
573 spin_unlock_irqrestore(&ds1286_lock, flags);
574
575 alm_tm->tm_min = bcd2bin(alm_tm->tm_min);
576 alm_tm->tm_hour = bcd2bin(alm_tm->tm_hour);
577 alm_tm->tm_sec = 0;
578}
579
580module_init(ds1286_init);
581module_exit(ds1286_exit);
582
583MODULE_AUTHOR("Ralf Baechle");
584MODULE_LICENSE("GPL");
585MODULE_ALIAS_MISCDEV(RTC_MINOR);
diff --git a/drivers/char/ip27-rtc.c b/drivers/char/ip27-rtc.c
deleted file mode 100644
index 2abd881b4cbc..000000000000
--- a/drivers/char/ip27-rtc.c
+++ /dev/null
@@ -1,329 +0,0 @@
1/*
2 * Driver for the SGS-Thomson M48T35 Timekeeper RAM chip
3 *
4 * Real Time Clock interface for Linux
5 *
6 * TODO: Implement periodic interrupts.
7 *
8 * Copyright (C) 2000 Silicon Graphics, Inc.
9 * Written by Ulf Carlsson (ulfc@engr.sgi.com)
10 *
11 * Based on code written by Paul Gortmaker.
12 *
13 * This driver allows use of the real time clock (built into
14 * nearly all computers) from user space. It exports the /dev/rtc
15 * interface supporting various ioctl() and also the /proc/rtc
16 * pseudo-file for status information.
17 *
18 * This program is free software; you can redistribute it and/or
19 * modify it under the terms of the GNU General Public License
20 * as published by the Free Software Foundation; either version
21 * 2 of the License, or (at your option) any later version.
22 *
23 */
24
25#define RTC_VERSION "1.09b"
26
27#include <linux/bcd.h>
28#include <linux/module.h>
29#include <linux/kernel.h>
30#include <linux/smp_lock.h>
31#include <linux/types.h>
32#include <linux/miscdevice.h>
33#include <linux/ioport.h>
34#include <linux/fcntl.h>
35#include <linux/rtc.h>
36#include <linux/init.h>
37#include <linux/poll.h>
38#include <linux/proc_fs.h>
39
40#include <asm/m48t35.h>
41#include <asm/sn/ioc3.h>
42#include <asm/io.h>
43#include <asm/uaccess.h>
44#include <asm/system.h>
45#include <asm/sn/klconfig.h>
46#include <asm/sn/sn0/ip27.h>
47#include <asm/sn/sn0/hub.h>
48#include <asm/sn/sn_private.h>
49
50static long rtc_ioctl(struct file *filp, unsigned int cmd,
51 unsigned long arg);
52
53static int rtc_read_proc(char *page, char **start, off_t off,
54 int count, int *eof, void *data);
55
56static void get_rtc_time(struct rtc_time *rtc_tm);
57
58/*
59 * Bits in rtc_status. (6 bits of room for future expansion)
60 */
61
62#define RTC_IS_OPEN 0x01 /* means /dev/rtc is in use */
63#define RTC_TIMER_ON 0x02 /* missed irq timer active */
64
65static unsigned char rtc_status; /* bitmapped status byte. */
66static unsigned long rtc_freq; /* Current periodic IRQ rate */
67static struct m48t35_rtc *rtc;
68
69/*
70 * If this driver ever becomes modularised, it will be really nice
71 * to make the epoch retain its value across module reload...
72 */
73
74static unsigned long epoch = 1970; /* year corresponding to 0x00 */
75
76static const unsigned char days_in_mo[] =
77{0, 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31};
78
79static long rtc_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
80{
81
82 struct rtc_time wtime;
83
84 switch (cmd) {
85 case RTC_RD_TIME: /* Read the time/date from RTC */
86 {
87 get_rtc_time(&wtime);
88 break;
89 }
90 case RTC_SET_TIME: /* Set the RTC */
91 {
92 struct rtc_time rtc_tm;
93 unsigned char mon, day, hrs, min, sec, leap_yr;
94 unsigned int yrs;
95
96 if (!capable(CAP_SYS_TIME))
97 return -EACCES;
98
99 if (copy_from_user(&rtc_tm, (struct rtc_time*)arg,
100 sizeof(struct rtc_time)))
101 return -EFAULT;
102
103 yrs = rtc_tm.tm_year + 1900;
104 mon = rtc_tm.tm_mon + 1; /* tm_mon starts at zero */
105 day = rtc_tm.tm_mday;
106 hrs = rtc_tm.tm_hour;
107 min = rtc_tm.tm_min;
108 sec = rtc_tm.tm_sec;
109
110 if (yrs < 1970)
111 return -EINVAL;
112
113 leap_yr = ((!(yrs % 4) && (yrs % 100)) || !(yrs % 400));
114
115 if ((mon > 12) || (day == 0))
116 return -EINVAL;
117
118 if (day > (days_in_mo[mon] + ((mon == 2) && leap_yr)))
119 return -EINVAL;
120
121 if ((hrs >= 24) || (min >= 60) || (sec >= 60))
122 return -EINVAL;
123
124 if ((yrs -= epoch) > 255) /* They are unsigned */
125 return -EINVAL;
126
127 if (yrs > 169)
128 return -EINVAL;
129
130 if (yrs >= 100)
131 yrs -= 100;
132
133 sec = bin2bcd(sec);
134 min = bin2bcd(min);
135 hrs = bin2bcd(hrs);
136 day = bin2bcd(day);
137 mon = bin2bcd(mon);
138 yrs = bin2bcd(yrs);
139
140 spin_lock_irq(&rtc_lock);
141 rtc->control |= M48T35_RTC_SET;
142 rtc->year = yrs;
143 rtc->month = mon;
144 rtc->date = day;
145 rtc->hour = hrs;
146 rtc->min = min;
147 rtc->sec = sec;
148 rtc->control &= ~M48T35_RTC_SET;
149 spin_unlock_irq(&rtc_lock);
150
151 return 0;
152 }
153 default:
154 return -EINVAL;
155 }
156 return copy_to_user((void *)arg, &wtime, sizeof wtime) ? -EFAULT : 0;
157}
158
159/*
160 * We enforce only one user at a time here with the open/close.
161 * Also clear the previous interrupt data on an open, and clean
162 * up things on a close.
163 */
164
165static int rtc_open(struct inode *inode, struct file *file)
166{
167 lock_kernel();
168 spin_lock_irq(&rtc_lock);
169
170 if (rtc_status & RTC_IS_OPEN) {
171 spin_unlock_irq(&rtc_lock);
172 unlock_kernel();
173 return -EBUSY;
174 }
175
176 rtc_status |= RTC_IS_OPEN;
177 spin_unlock_irq(&rtc_lock);
178 unlock_kernel();
179
180 return 0;
181}
182
183static int rtc_release(struct inode *inode, struct file *file)
184{
185 /*
186 * Turn off all interrupts once the device is no longer
187 * in use, and clear the data.
188 */
189
190 spin_lock_irq(&rtc_lock);
191 rtc_status &= ~RTC_IS_OPEN;
192 spin_unlock_irq(&rtc_lock);
193
194 return 0;
195}
196
197/*
198 * The various file operations we support.
199 */
200
201static const struct file_operations rtc_fops = {
202 .owner = THIS_MODULE,
203 .unlocked_ioctl = rtc_ioctl,
204 .open = rtc_open,
205 .release = rtc_release,
206};
207
208static struct miscdevice rtc_dev=
209{
210 RTC_MINOR,
211 "rtc",
212 &rtc_fops
213};
214
215static int __init rtc_init(void)
216{
217 rtc = (struct m48t35_rtc *)
218 (KL_CONFIG_CH_CONS_INFO(master_nasid)->memory_base + IOC3_BYTEBUS_DEV0);
219
220 printk(KERN_INFO "Real Time Clock Driver v%s\n", RTC_VERSION);
221 if (misc_register(&rtc_dev)) {
222 printk(KERN_ERR "rtc: cannot register misc device.\n");
223 return -ENODEV;
224 }
225 if (!create_proc_read_entry("driver/rtc", 0, NULL, rtc_read_proc, NULL)) {
226 printk(KERN_ERR "rtc: cannot create /proc/rtc.\n");
227 misc_deregister(&rtc_dev);
228 return -ENOENT;
229 }
230
231 rtc_freq = 1024;
232
233 return 0;
234}
235
236static void __exit rtc_exit (void)
237{
238 /* interrupts and timer disabled at this point by rtc_release */
239
240 remove_proc_entry ("rtc", NULL);
241 misc_deregister(&rtc_dev);
242}
243
244module_init(rtc_init);
245module_exit(rtc_exit);
246
247/*
248 * Info exported via "/proc/rtc".
249 */
250
251static int rtc_get_status(char *buf)
252{
253 char *p;
254 struct rtc_time tm;
255
256 /*
257 * Just emulate the standard /proc/rtc
258 */
259
260 p = buf;
261
262 get_rtc_time(&tm);
263
264 /*
265 * There is no way to tell if the luser has the RTC set for local
266 * time or for Universal Standard Time (GMT). Probably local though.
267 */
268 p += sprintf(p,
269 "rtc_time\t: %02d:%02d:%02d\n"
270 "rtc_date\t: %04d-%02d-%02d\n"
271 "rtc_epoch\t: %04lu\n"
272 "24hr\t\t: yes\n",
273 tm.tm_hour, tm.tm_min, tm.tm_sec,
274 tm.tm_year + 1900, tm.tm_mon + 1, tm.tm_mday, epoch);
275
276 return p - buf;
277}
278
279static int rtc_read_proc(char *page, char **start, off_t off,
280 int count, int *eof, void *data)
281{
282 int len = rtc_get_status(page);
283 if (len <= off+count) *eof = 1;
284 *start = page + off;
285 len -= off;
286 if (len>count) len = count;
287 if (len<0) len = 0;
288 return len;
289}
290
291static void get_rtc_time(struct rtc_time *rtc_tm)
292{
293 /*
294 * Do we need to wait for the last update to finish?
295 */
296
297 /*
298 * Only the values that we read from the RTC are set. We leave
299 * tm_wday, tm_yday and tm_isdst untouched. Even though the
300 * RTC has RTC_DAY_OF_WEEK, we ignore it, as it is only updated
301 * by the RTC when initially set to a non-zero value.
302 */
303 spin_lock_irq(&rtc_lock);
304 rtc->control |= M48T35_RTC_READ;
305 rtc_tm->tm_sec = rtc->sec;
306 rtc_tm->tm_min = rtc->min;
307 rtc_tm->tm_hour = rtc->hour;
308 rtc_tm->tm_mday = rtc->date;
309 rtc_tm->tm_mon = rtc->month;
310 rtc_tm->tm_year = rtc->year;
311 rtc->control &= ~M48T35_RTC_READ;
312 spin_unlock_irq(&rtc_lock);
313
314 rtc_tm->tm_sec = bcd2bin(rtc_tm->tm_sec);
315 rtc_tm->tm_min = bcd2bin(rtc_tm->tm_min);
316 rtc_tm->tm_hour = bcd2bin(rtc_tm->tm_hour);
317 rtc_tm->tm_mday = bcd2bin(rtc_tm->tm_mday);
318 rtc_tm->tm_mon = bcd2bin(rtc_tm->tm_mon);
319 rtc_tm->tm_year = bcd2bin(rtc_tm->tm_year);
320
321 /*
322 * Account for differences between how the RTC uses the values
323 * and how they are defined in a struct rtc_time;
324 */
325 if ((rtc_tm->tm_year += (epoch - 1900)) <= 69)
326 rtc_tm->tm_year += 100;
327
328 rtc_tm->tm_mon--;
329}
generated by cgit v1.2.2 (git 2.25.0) at 2025-01-01 21:45:54 -0500