diff options
Diffstat (limited to 'arch/mn10300')
150 files changed, 3692 insertions, 3006 deletions
diff --git a/arch/mn10300/Kconfig b/arch/mn10300/Kconfig index 41ba38513c8..a648de1b109 100644 --- a/arch/mn10300/Kconfig +++ b/arch/mn10300/Kconfig @@ -1,6 +1,18 @@ config MN10300 def_bool y select HAVE_OPROFILE + select GENERIC_IRQ_SHOW + select ARCH_WANT_IPC_PARSE_VERSION + select HAVE_ARCH_TRACEHOOK + select HAVE_ARCH_KGDB + select GENERIC_ATOMIC64 + select HAVE_NMI_WATCHDOG if MN10300_WD_TIMER + select VIRT_TO_BUS + select GENERIC_CLOCKEVENTS + select MODULES_USE_ELF_RELA + select OLD_SIGSUSPEND3 + select OLD_SIGACTION + select HAVE_DEBUG_STACKOVERFLOW config AM33_2 def_bool n @@ -34,42 +46,12 @@ config RWSEM_GENERIC_SPINLOCK config RWSEM_XCHGADD_ALGORITHM bool -config GENERIC_HARDIRQS_NO__DO_IRQ - def_bool y - config GENERIC_CALIBRATE_DELAY def_bool y -config GENERIC_CMOS_UPDATE - def_bool n - -config GENERIC_FIND_NEXT_BIT - def_bool y - config GENERIC_HWEIGHT def_bool y -config GENERIC_TIME - def_bool y - -config GENERIC_CLOCKEVENTS - def_bool y - -config GENERIC_CLOCKEVENTS_BUILD - def_bool y - depends on GENERIC_CLOCKEVENTS - -config GENERIC_CLOCKEVENTS_BROADCAST - bool - -config CEVT_MN10300 - def_bool y - depends on GENERIC_CLOCKEVENTS - -config CSRC_MN10300 - def_bool y - depends on GENERIC_TIME - config GENERIC_BUG def_bool y @@ -79,10 +61,6 @@ config QUICKLIST config ARCH_HAS_ILOG2_U32 def_bool y -# Use the generic interrupt handling code in kernel/irq/ -config GENERIC_HARDIRQS - def_bool y - config HOTPLUG_CPU def_bool n @@ -206,16 +184,16 @@ config SMP depends on MN10300_PROC_MN2WS0038 || MN10300_PROC_MN2WS0050 ---help--- This enables support for systems with more than one CPU. If you have - a system with only one CPU, like most personal computers, say N. If - you have a system with more than one CPU, say Y. + a system with only one CPU, say N. If you have a system with more + than one CPU, say Y. - If you say N here, the kernel will run on single and multiprocessor + If you say N here, the kernel will run on uni- and multiprocessor machines, but will use only one CPU of a multiprocessor machine. If you say Y here, the kernel will run on many, but not all, - singleprocessor machines. On a singleprocessor machine, the kernel + uniprocessor machines. On a uniprocessor machine, the kernel will run faster if you say N here. - See also <file:Documentation/i386/IO-APIC.txt>, + See also <file:Documentation/x86/i386/IO-APIC.txt>, <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at <http://www.tldp.org/docs.html#howto>. @@ -226,11 +204,6 @@ config NR_CPUS depends on SMP default "2" -config USE_GENERIC_SMP_HELPERS - bool - depends on SMP - default y - source "kernel/Kconfig.preempt" config MN10300_CURRENT_IN_E2 @@ -258,7 +231,6 @@ config MN10300_USING_JTAG single-stepping, which are taken over completely by the JTAG unit. source "kernel/Kconfig.hz" -source "kernel/time/Kconfig" config MN10300_RTC bool "Using MN10300 RTC" @@ -280,6 +252,7 @@ config PCI bool "Use PCI" depends on MN10300_UNIT_ASB2305 default y + select GENERIC_PCI_IOMAP help Some systems (such as the ASB2305) have PCI onboard. If you have one of these boards and you wish to use the PCI facilities, say Y here. @@ -425,9 +398,9 @@ comment "[!] NOTE: A lower number/level indicates a higher priority (0 is highes comment "____Non-maskable interrupt levels____" comment "The following must be set to a higher priority than local_irq_disable() and on-chip serial" -config GDBSTUB_IRQ_LEVEL - int "GDBSTUB interrupt priority" - depends on GDBSTUB +config DEBUGGER_IRQ_LEVEL + int "DEBUGGER interrupt priority" + depends on KERNEL_DEBUGGER range 0 1 if LINUX_CLI_LEVEL = 2 range 0 2 if LINUX_CLI_LEVEL = 3 range 0 3 if LINUX_CLI_LEVEL = 4 @@ -461,7 +434,7 @@ config LINUX_CLI_LEVEL EPSW.IM from 7. Any interrupt is permitted for which the level is lower than EPSW.IM. - Certain interrupts, such as GDBSTUB and virtual MN10300 on-chip + Certain interrupts, such as DEBUGGER and virtual MN10300 on-chip serial DMA interrupts are allowed to interrupt normal disabled sections. diff --git a/arch/mn10300/Kconfig.debug b/arch/mn10300/Kconfig.debug index ce83c74b3fd..94efb3ed223 100644 --- a/arch/mn10300/Kconfig.debug +++ b/arch/mn10300/Kconfig.debug @@ -2,10 +2,6 @@ menu "Kernel hacking" source "lib/Kconfig.debug" -config DEBUG_STACKOVERFLOW - bool "Check for stack overflows" - depends on DEBUG_KERNEL - config DEBUG_DECOMPRESS_KERNEL bool "Using serial port during decompressing kernel" depends on DEBUG_KERNEL @@ -36,7 +32,7 @@ config KPROBES config GDBSTUB bool "Remote GDB kernel debugging" - depends on DEBUG_KERNEL + depends on DEBUG_KERNEL && DEPRECATED select DEBUG_INFO select FRAME_POINTER help @@ -46,6 +42,9 @@ config GDBSTUB RAM to avoid excessive linking time. This is only useful for kernel hackers. If unsure, say N. + This is deprecated in favour of KGDB and will be removed in a later + version. + config GDBSTUB_IMMEDIATE bool "Break into GDB stub immediately" depends on GDBSTUB @@ -54,6 +53,14 @@ config GDBSTUB_IMMEDIATE possible, leaving the program counter at the beginning of start_kernel() in init/main.c. +config GDBSTUB_ALLOW_SINGLE_STEP + bool "Allow software single-stepping in GDB stub" + depends on GDBSTUB && !SMP && !PREEMPT + help + Allow GDB stub to perform software single-stepping through the + kernel. This doesn't work very well on SMP or preemptible kernels as + it uses temporary breakpoints to emulate single-stepping. + config GDB_CONSOLE bool "Console output to GDB" depends on GDBSTUB @@ -142,3 +149,7 @@ config GDBSTUB_ON_TTYSx default y endmenu + +config KERNEL_DEBUGGER + def_bool y + depends on GDBSTUB || KGDB diff --git a/arch/mn10300/Makefile b/arch/mn10300/Makefile index 7120282bf0d..3f1ea5ddc40 100644 --- a/arch/mn10300/Makefile +++ b/arch/mn10300/Makefile @@ -26,7 +26,7 @@ CHECKFLAGS += PROCESSOR := unset UNIT := unset -KBUILD_CFLAGS += -mam33 -mmem-funcs -DCPU=AM33 +KBUILD_CFLAGS += -mam33 -DCPU=AM33 $(call cc-option,-mmem-funcs,) KBUILD_AFLAGS += -mam33 -DCPU=AM33 ifeq ($(CONFIG_MN10300_CURRENT_IN_E2),y) @@ -51,7 +51,7 @@ UNIT := asb2364 endif -head-y := arch/mn10300/kernel/head.o arch/mn10300/kernel/init_task.o +head-y := arch/mn10300/kernel/head.o core-y += arch/mn10300/kernel/ arch/mn10300/mm/ @@ -92,14 +92,6 @@ define archhelp echo '* zImage - Compressed kernel image (arch/$(ARCH)/boot/zImage)' endef -# If you make sure the .S files get compiled with debug info, -# uncomment the following to disable optimisations -# that are unhelpful whilst debugging. -ifdef CONFIG_DEBUG_INFO -#KBUILD_CFLAGS += -O1 -KBUILD_AFLAGS += -Wa,--gdwarf2 -endif - # # include the appropriate processor- and unit-specific headers # diff --git a/arch/mn10300/configs/asb2303_defconfig b/arch/mn10300/configs/asb2303_defconfig index 3f749b69ca7..1fd41ec1dfb 100644 --- a/arch/mn10300/configs/asb2303_defconfig +++ b/arch/mn10300/configs/asb2303_defconfig @@ -4,7 +4,7 @@ CONFIG_BSD_PROCESS_ACCT=y CONFIG_TINY_RCU=y CONFIG_LOG_BUF_SHIFT=14 # CONFIG_CC_OPTIMIZE_FOR_SIZE is not set -CONFIG_EMBEDDED=y +CONFIG_EXPERT=y # CONFIG_KALLSYMS is not set # CONFIG_HOTPLUG is not set # CONFIG_VM_EVENT_COUNTERS is not set diff --git a/arch/mn10300/configs/asb2364_defconfig b/arch/mn10300/configs/asb2364_defconfig index 83ce2f27b12..fbb96ae3122 100644 --- a/arch/mn10300/configs/asb2364_defconfig +++ b/arch/mn10300/configs/asb2364_defconfig @@ -8,14 +8,13 @@ CONFIG_TASK_XACCT=y CONFIG_TASK_IO_ACCOUNTING=y CONFIG_LOG_BUF_SHIFT=14 CONFIG_CGROUPS=y -CONFIG_CGROUP_NS=y CONFIG_CGROUP_FREEZER=y CONFIG_CGROUP_DEVICE=y CONFIG_CGROUP_CPUACCT=y CONFIG_RESOURCE_COUNTERS=y CONFIG_RELAY=y # CONFIG_CC_OPTIMIZE_FOR_SIZE is not set -CONFIG_EMBEDDED=y +CONFIG_EXPERT=y # CONFIG_KALLSYMS is not set # CONFIG_VM_EVENT_COUNTERS is not set CONFIG_SLAB=y diff --git a/arch/mn10300/include/asm/Kbuild b/arch/mn10300/include/asm/Kbuild index c68e1680da0..654d5ba6e31 100644 --- a/arch/mn10300/include/asm/Kbuild +++ b/arch/mn10300/include/asm/Kbuild @@ -1 +1,9 @@ -include include/asm-generic/Kbuild.asm + +generic-y += barrier.h +generic-y += clkdev.h +generic-y += cputime.h +generic-y += exec.h +generic-y += hash.h +generic-y += mcs_spinlock.h +generic-y += preempt.h +generic-y += trace_clock.h diff --git a/arch/mn10300/include/asm/atomic.h b/arch/mn10300/include/asm/atomic.h index 92d2f9298e3..cadeb1e2cdf 100644 --- a/arch/mn10300/include/asm/atomic.h +++ b/arch/mn10300/include/asm/atomic.h @@ -12,112 +12,8 @@ #define _ASM_ATOMIC_H #include <asm/irqflags.h> - -#ifndef __ASSEMBLY__ - -#ifdef CONFIG_SMP -#ifdef CONFIG_MN10300_HAS_ATOMIC_OPS_UNIT -static inline -unsigned long __xchg(volatile unsigned long *m, unsigned long val) -{ - unsigned long status; - unsigned long oldval; - - asm volatile( - "1: mov %4,(_AAR,%3) \n" - " mov (_ADR,%3),%1 \n" - " mov %5,(_ADR,%3) \n" - " mov (_ADR,%3),%0 \n" /* flush */ - " mov (_ASR,%3),%0 \n" - " or %0,%0 \n" - " bne 1b \n" - : "=&r"(status), "=&r"(oldval), "=m"(*m) - : "a"(ATOMIC_OPS_BASE_ADDR), "r"(m), "r"(val) - : "memory", "cc"); - - return oldval; -} - -static inline unsigned long __cmpxchg(volatile unsigned long *m, - unsigned long old, unsigned long new) -{ - unsigned long status; - unsigned long oldval; - - asm volatile( - "1: mov %4,(_AAR,%3) \n" - " mov (_ADR,%3),%1 \n" - " cmp %5,%1 \n" - " bne 2f \n" - " mov %6,(_ADR,%3) \n" - "2: mov (_ADR,%3),%0 \n" /* flush */ - " mov (_ASR,%3),%0 \n" - " or %0,%0 \n" - " bne 1b \n" - : "=&r"(status), "=&r"(oldval), "=m"(*m) - : "a"(ATOMIC_OPS_BASE_ADDR), "r"(m), - "r"(old), "r"(new) - : "memory", "cc"); - - return oldval; -} -#else /* CONFIG_MN10300_HAS_ATOMIC_OPS_UNIT */ -#error "No SMP atomic operation support!" -#endif /* CONFIG_MN10300_HAS_ATOMIC_OPS_UNIT */ - -#else /* CONFIG_SMP */ - -/* - * Emulate xchg for non-SMP MN10300 - */ -struct __xchg_dummy { unsigned long a[100]; }; -#define __xg(x) ((struct __xchg_dummy *)(x)) - -static inline -unsigned long __xchg(volatile unsigned long *m, unsigned long val) -{ - unsigned long oldval; - unsigned long flags; - - flags = arch_local_cli_save(); - oldval = *m; - *m = val; - arch_local_irq_restore(flags); - return oldval; -} - -/* - * Emulate cmpxchg for non-SMP MN10300 - */ -static inline unsigned long __cmpxchg(volatile unsigned long *m, - unsigned long old, unsigned long new) -{ - unsigned long oldval; - unsigned long flags; - - flags = arch_local_cli_save(); - oldval = *m; - if (oldval == old) - *m = new; - arch_local_irq_restore(flags); - return oldval; -} - -#endif /* CONFIG_SMP */ - -#define xchg(ptr, v) \ - ((__typeof__(*(ptr))) __xchg((unsigned long *)(ptr), \ - (unsigned long)(v))) - -#define cmpxchg(ptr, o, n) \ - ((__typeof__(*(ptr))) __cmpxchg((unsigned long *)(ptr), \ - (unsigned long)(o), \ - (unsigned long)(n))) - -#define atomic_xchg(ptr, v) (xchg(&(ptr)->counter, (v))) -#define atomic_cmpxchg(v, old, new) (cmpxchg(&((v)->counter), (old), (new))) - -#endif /* !__ASSEMBLY__ */ +#include <asm/cmpxchg.h> +#include <asm/barrier.h> #ifndef CONFIG_SMP #include <asm-generic/atomic.h> @@ -139,7 +35,7 @@ static inline unsigned long __cmpxchg(volatile unsigned long *m, * Atomically reads the value of @v. Note that the guaranteed * useful range of an atomic_t is only 24 bits. */ -#define atomic_read(v) ((v)->counter) +#define atomic_read(v) (ACCESS_ONCE((v)->counter)) /** * atomic_set - set atomic variable @@ -260,16 +156,17 @@ static inline void atomic_dec(atomic_t *v) #define atomic_dec_and_test(v) (atomic_sub_return(1, (v)) == 0) #define atomic_inc_and_test(v) (atomic_add_return(1, (v)) == 0) -#define atomic_add_unless(v, a, u) \ +#define __atomic_add_unless(v, a, u) \ ({ \ int c, old; \ c = atomic_read(v); \ while (c != (u) && (old = atomic_cmpxchg((v), c, c + (a))) != c) \ c = old; \ - c != (u); \ + c; \ }) -#define atomic_inc_not_zero(v) atomic_add_unless((v), 1, 0) +#define atomic_xchg(ptr, v) (xchg(&(ptr)->counter, (v))) +#define atomic_cmpxchg(v, old, new) (cmpxchg(&((v)->counter), (old), (new))) /** * atomic_clear_mask - Atomically clear bits in memory @@ -338,14 +235,6 @@ static inline void atomic_set_mask(unsigned long mask, unsigned long *addr) #endif } -/* Atomic operations are already serializing on MN10300??? */ -#define smp_mb__before_atomic_dec() barrier() -#define smp_mb__after_atomic_dec() barrier() -#define smp_mb__before_atomic_inc() barrier() -#define smp_mb__after_atomic_inc() barrier() - -#include <asm-generic/atomic-long.h> - #endif /* __KERNEL__ */ #endif /* CONFIG_SMP */ #endif /* _ASM_ATOMIC_H */ diff --git a/arch/mn10300/include/asm/bitops.h b/arch/mn10300/include/asm/bitops.h index 3b8a868188f..fe6f8e2c361 100644 --- a/arch/mn10300/include/asm/bitops.h +++ b/arch/mn10300/include/asm/bitops.h @@ -18,9 +18,7 @@ #define __ASM_BITOPS_H #include <asm/cpu-regs.h> - -#define smp_mb__before_clear_bit() barrier() -#define smp_mb__after_clear_bit() barrier() +#include <asm/barrier.h> /* * set bit @@ -227,14 +225,8 @@ int ffs(int x) #include <asm-generic/bitops/find.h> #include <asm-generic/bitops/sched.h> #include <asm-generic/bitops/hweight.h> - -#define ext2_set_bit_atomic(lock, nr, addr) \ - test_and_set_bit((nr), (addr)) -#define ext2_clear_bit_atomic(lock, nr, addr) \ - test_and_clear_bit((nr), (addr)) - -#include <asm-generic/bitops/ext2-non-atomic.h> -#include <asm-generic/bitops/minix-le.h> +#include <asm-generic/bitops/ext2-atomic-setbit.h> +#include <asm-generic/bitops/le.h> #endif /* __KERNEL__ */ #endif /* __ASM_BITOPS_H */ diff --git a/arch/mn10300/include/asm/cmpxchg.h b/arch/mn10300/include/asm/cmpxchg.h new file mode 100644 index 00000000000..97a4aaf387a --- /dev/null +++ b/arch/mn10300/include/asm/cmpxchg.h @@ -0,0 +1,115 @@ +/* MN10300 Atomic xchg/cmpxchg operations + * + * Copyright (C) 2007 Red Hat, Inc. All Rights Reserved. + * Written by David Howells (dhowells@redhat.com) + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public Licence + * as published by the Free Software Foundation; either version + * 2 of the Licence, or (at your option) any later version. + */ +#ifndef _ASM_CMPXCHG_H +#define _ASM_CMPXCHG_H + +#include <asm/irqflags.h> + +#ifdef CONFIG_SMP +#ifdef CONFIG_MN10300_HAS_ATOMIC_OPS_UNIT +static inline +unsigned long __xchg(volatile unsigned long *m, unsigned long val) +{ + unsigned long status; + unsigned long oldval; + + asm volatile( + "1: mov %4,(_AAR,%3) \n" + " mov (_ADR,%3),%1 \n" + " mov %5,(_ADR,%3) \n" + " mov (_ADR,%3),%0 \n" /* flush */ + " mov (_ASR,%3),%0 \n" + " or %0,%0 \n" + " bne 1b \n" + : "=&r"(status), "=&r"(oldval), "=m"(*m) + : "a"(ATOMIC_OPS_BASE_ADDR), "r"(m), "r"(val) + : "memory", "cc"); + + return oldval; +} + +static inline unsigned long __cmpxchg(volatile unsigned long *m, + unsigned long old, unsigned long new) +{ + unsigned long status; + unsigned long oldval; + + asm volatile( + "1: mov %4,(_AAR,%3) \n" + " mov (_ADR,%3),%1 \n" + " cmp %5,%1 \n" + " bne 2f \n" + " mov %6,(_ADR,%3) \n" + "2: mov (_ADR,%3),%0 \n" /* flush */ + " mov (_ASR,%3),%0 \n" + " or %0,%0 \n" + " bne 1b \n" + : "=&r"(status), "=&r"(oldval), "=m"(*m) + : "a"(ATOMIC_OPS_BASE_ADDR), "r"(m), + "r"(old), "r"(new) + : "memory", "cc"); + + return oldval; +} +#else /* CONFIG_MN10300_HAS_ATOMIC_OPS_UNIT */ +#error "No SMP atomic operation support!" +#endif /* CONFIG_MN10300_HAS_ATOMIC_OPS_UNIT */ + +#else /* CONFIG_SMP */ + +/* + * Emulate xchg for non-SMP MN10300 + */ +struct __xchg_dummy { unsigned long a[100]; }; +#define __xg(x) ((struct __xchg_dummy *)(x)) + +static inline +unsigned long __xchg(volatile unsigned long *m, unsigned long val) +{ + unsigned long oldval; + unsigned long flags; + + flags = arch_local_cli_save(); + oldval = *m; + *m = val; + arch_local_irq_restore(flags); + return oldval; +} + +/* + * Emulate cmpxchg for non-SMP MN10300 + */ +static inline unsigned long __cmpxchg(volatile unsigned long *m, + unsigned long old, unsigned long new) +{ + unsigned long oldval; + unsigned long flags; + + flags = arch_local_cli_save(); + oldval = *m; + if (oldval == old) + *m = new; + arch_local_irq_restore(flags); + return oldval; +} + +#endif /* CONFIG_SMP */ + +#define xchg(ptr, v) \ + ((__typeof__(*(ptr))) __xchg((unsigned long *)(ptr), \ + (unsigned long)(v))) + +#define cmpxchg(ptr, o, n) \ + ((__typeof__(*(ptr))) __cmpxchg((unsigned long *)(ptr), \ + (unsigned long)(o), \ + (unsigned long)(n))) + +#endif /* _ASM_CMPXCHG_H */ diff --git a/arch/mn10300/include/asm/cpu-regs.h b/arch/mn10300/include/asm/cpu-regs.h index 90ed4a365c9..c54effae220 100644 --- a/arch/mn10300/include/asm/cpu-regs.h +++ b/arch/mn10300/include/asm/cpu-regs.h @@ -49,7 +49,7 @@ asm(" .am33_2\n"); #define EPSW_IM_6 0x00000600 /* interrupt mode 6 */ #define EPSW_IM_7 0x00000700 /* interrupt mode 7 */ #define EPSW_IE 0x00000800 /* interrupt enable */ -#define EPSW_S 0x00003000 /* software auxilliary bits */ +#define EPSW_S 0x00003000 /* software auxiliary bits */ #define EPSW_T 0x00008000 /* trace enable */ #define EPSW_nSL 0x00010000 /* not supervisor level */ #define EPSW_NMID 0x00020000 /* nonmaskable interrupt disable */ diff --git a/arch/mn10300/include/asm/cputime.h b/arch/mn10300/include/asm/cputime.h deleted file mode 100644 index 6d68ad7e0ea..00000000000 --- a/arch/mn10300/include/asm/cputime.h +++ /dev/null @@ -1 +0,0 @@ -#include <asm-generic/cputime.h> diff --git a/arch/mn10300/include/asm/debugger.h b/arch/mn10300/include/asm/debugger.h new file mode 100644 index 00000000000..e1d3b083696 --- /dev/null +++ b/arch/mn10300/include/asm/debugger.h @@ -0,0 +1,43 @@ +/* Kernel debugger for MN10300 + * + * Copyright (C) 2011 Red Hat, Inc. All Rights Reserved. + * Written by David Howells (dhowells@redhat.com) + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public Licence + * as published by the Free Software Foundation; either version + * 2 of the Licence, or (at your option) any later version. + */ + +#ifndef _ASM_DEBUGGER_H +#define _ASM_DEBUGGER_H + +#if defined(CONFIG_KERNEL_DEBUGGER) + +extern int debugger_intercept(enum exception_code, int, int, struct pt_regs *); +extern int at_debugger_breakpoint(struct pt_regs *); + +#ifndef CONFIG_MN10300_DEBUGGER_CACHE_NO_FLUSH +extern void debugger_local_cache_flushinv(void); +extern void debugger_local_cache_flushinv_one(u8 *); +#else +static inline void debugger_local_cache_flushinv(void) {} +static inline void debugger_local_cache_flushinv_one(u8 *addr) {} +#endif + +#else /* CONFIG_KERNEL_DEBUGGER */ + +static inline int debugger_intercept(enum exception_code excep, + int signo, int si_code, + struct pt_regs *regs) +{ + return 0; +} + +static inline int at_debugger_breakpoint(struct pt_regs *regs) +{ + return 0; +} + +#endif /* CONFIG_KERNEL_DEBUGGER */ +#endif /* _ASM_DEBUGGER_H */ diff --git a/arch/mn10300/include/asm/div64.h b/arch/mn10300/include/asm/div64.h index 34dcb8e6830..503efab2a51 100644 --- a/arch/mn10300/include/asm/div64.h +++ b/arch/mn10300/include/asm/div64.h @@ -16,6 +16,19 @@ extern void ____unhandled_size_in_do_div___(void); /* + * Beginning with gcc 4.6, the MDR register is represented explicitly. We + * must, therefore, at least explicitly clobber the register when we make + * changes to it. The following assembly fragments *could* be rearranged in + * order to leave the moves to/from the MDR register to the compiler, but the + * gains would be minimal at best. + */ +#if __GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 6) +# define CLOBBER_MDR_CC "mdr", "cc" +#else +# define CLOBBER_MDR_CC "cc" +#endif + +/* * divide n by base, leaving the result in n and returning the remainder * - we can do this quite efficiently on the MN10300 by cascading the divides * through the MDR register @@ -29,7 +42,7 @@ extern void ____unhandled_size_in_do_div___(void); "mov mdr,%1 \n" \ : "+r"(n), "=d"(__rem) \ : "r"(base), "1"(__rem) \ - : "cc" \ + : CLOBBER_MDR_CC \ ); \ } else if (sizeof(n) <= 8) { \ union { \ @@ -48,7 +61,7 @@ extern void ____unhandled_size_in_do_div___(void); : "=d"(__rem), "=r"(__quot.w[1]), "=r"(__quot.w[0]) \ : "r"(base), "0"(__rem), "1"(__quot.w[1]), \ "2"(__quot.w[0]) \ - : "cc" \ + : CLOBBER_MDR_CC \ ); \ n = __quot.l; \ } else { \ @@ -72,7 +85,7 @@ unsigned __muldiv64u(unsigned val, unsigned mult, unsigned div) * MDR = MDR:val%div */ : "=r"(result) : "0"(val), "ir"(mult), "r"(div) - : "cc" + : CLOBBER_MDR_CC ); return result; @@ -93,7 +106,7 @@ signed __muldiv64s(signed val, signed mult, signed div) * MDR = MDR:val%div */ : "=r"(result) : "0"(val), "ir"(mult), "r"(div) - : "cc" + : CLOBBER_MDR_CC ); return result; diff --git a/arch/mn10300/include/asm/dma-mapping.h b/arch/mn10300/include/asm/dma-mapping.h index c1be4397b1e..a18abfc558e 100644 --- a/arch/mn10300/include/asm/dma-mapping.h +++ b/arch/mn10300/include/asm/dma-mapping.h @@ -168,4 +168,19 @@ void dma_cache_sync(void *vaddr, size_t size, mn10300_dcache_flush_inv(); } +/* Not supported for now */ +static inline int dma_mmap_coherent(struct device *dev, + struct vm_area_struct *vma, void *cpu_addr, + dma_addr_t dma_addr, size_t size) +{ + return -EINVAL; +} + +static inline int dma_get_sgtable(struct device *dev, struct sg_table *sgt, + void *cpu_addr, dma_addr_t dma_addr, + size_t size) +{ + return -EINVAL; +} + #endif diff --git a/arch/mn10300/include/asm/dma.h b/arch/mn10300/include/asm/dma.h index 098df2e617a..10b77d4628c 100644 --- a/arch/mn10300/include/asm/dma.h +++ b/arch/mn10300/include/asm/dma.h @@ -11,7 +11,6 @@ #ifndef _ASM_DMA_H #define _ASM_DMA_H -#include <asm/system.h> #include <linux/spinlock.h> #include <asm/io.h> #include <linux/delay.h> diff --git a/arch/mn10300/include/asm/elf.h b/arch/mn10300/include/asm/elf.h index 8157c9267f4..f592d7a9f03 100644 --- a/arch/mn10300/include/asm/elf.h +++ b/arch/mn10300/include/asm/elf.h @@ -150,8 +150,4 @@ do { \ */ #define ELF_PLATFORM (NULL) -#ifdef __KERNEL__ -#define SET_PERSONALITY(ex) set_personality(PER_LINUX) -#endif - #endif /* _ASM_ELF_H */ diff --git a/arch/mn10300/include/asm/exceptions.h b/arch/mn10300/include/asm/exceptions.h index ca3e20508c7..95a4d42c3a0 100644 --- a/arch/mn10300/include/asm/exceptions.h +++ b/arch/mn10300/include/asm/exceptions.h @@ -110,7 +110,7 @@ extern asmlinkage void nmi_handler(void); extern asmlinkage void misalignment(struct pt_regs *, enum exception_code); extern void die(const char *, struct pt_regs *, enum exception_code) - ATTRIB_NORET; + __noreturn; extern int die_if_no_fixup(const char *, struct pt_regs *, enum exception_code); diff --git a/arch/mn10300/include/asm/fpu.h b/arch/mn10300/include/asm/fpu.h index b7625de8ead..738ff72659d 100644 --- a/arch/mn10300/include/asm/fpu.h +++ b/arch/mn10300/include/asm/fpu.h @@ -55,7 +55,6 @@ static inline void clear_using_fpu(struct task_struct *tsk) extern asmlinkage void fpu_kill_state(struct task_struct *); extern asmlinkage void fpu_exception(struct pt_regs *, enum exception_code); -extern asmlinkage void fpu_invalid_op(struct pt_regs *, enum exception_code); extern asmlinkage void fpu_init_state(void); extern asmlinkage void fpu_save(struct fpu_state_struct *); extern int fpu_setup_sigcontext(struct fpucontext *buf); @@ -113,7 +112,6 @@ static inline void flush_fpu(void) extern asmlinkage void unexpected_fpu_exception(struct pt_regs *, enum exception_code); -#define fpu_invalid_op unexpected_fpu_exception #define fpu_exception unexpected_fpu_exception struct task_struct; diff --git a/arch/mn10300/include/asm/frame.inc b/arch/mn10300/include/asm/frame.inc index 2ee58e3eb6b..1c3eb4fda95 100644 --- a/arch/mn10300/include/asm/frame.inc +++ b/arch/mn10300/include/asm/frame.inc @@ -61,7 +61,7 @@ ############################################################################### .macro RESTORE_ALL # peel back the stack to the calling frame - # - this permits execve() to discard extra frames due to kernel syscalls + # - we need that when returning from interrupts to kernel mode GET_THREAD_INFO a0 mov (TI_frame,a0),fp mov fp,sp diff --git a/arch/mn10300/include/asm/highmem.h b/arch/mn10300/include/asm/highmem.h index bfe2d88604d..2fbbe4d920a 100644 --- a/arch/mn10300/include/asm/highmem.h +++ b/arch/mn10300/include/asm/highmem.h @@ -70,7 +70,7 @@ static inline void kunmap(struct page *page) * be used in IRQ contexts, so in some (very limited) cases we need * it. */ -static inline unsigned long __kmap_atomic(struct page *page) +static inline void *kmap_atomic(struct page *page) { unsigned long vaddr; int idx, type; @@ -89,7 +89,7 @@ static inline unsigned long __kmap_atomic(struct page *page) set_pte(kmap_pte - idx, mk_pte(page, kmap_prot)); local_flush_tlb_one(vaddr); - return vaddr; + return (void *)vaddr; } static inline void __kunmap_atomic(unsigned long vaddr) diff --git a/arch/mn10300/include/asm/intctl-regs.h b/arch/mn10300/include/asm/intctl-regs.h index 585b708c2bc..d65bbeebe50 100644 --- a/arch/mn10300/include/asm/intctl-regs.h +++ b/arch/mn10300/include/asm/intctl-regs.h @@ -60,11 +60,6 @@ #ifndef __ASSEMBLY__ extern void set_intr_level(int irq, u16 level); -extern void mn10300_intc_set_level(unsigned int irq, unsigned int level); -extern void mn10300_intc_clear(unsigned int irq); -extern void mn10300_intc_set(unsigned int irq); -extern void mn10300_intc_enable(unsigned int irq); -extern void mn10300_intc_disable(unsigned int irq); extern void mn10300_set_lateack_irq_type(int irq); #endif diff --git a/arch/mn10300/include/asm/io.h b/arch/mn10300/include/asm/io.h index 787255da744..e6ed0d897cc 100644 --- a/arch/mn10300/include/asm/io.h +++ b/arch/mn10300/include/asm/io.h @@ -14,6 +14,7 @@ #include <asm/page.h> /* I/O is all done through memory accesses */ #include <asm/cpu-regs.h> #include <asm/cacheflush.h> +#include <asm-generic/pci_iomap.h> #define mmiowb() do {} while (0) @@ -229,7 +230,6 @@ static inline void outsl(unsigned long addr, const void *buffer, int count) /* Create a virtual mapping cookie for a PCI BAR (memory or IO) */ struct pci_dev; -extern void __iomem *pci_iomap(struct pci_dev *dev, int bar, unsigned long max); static inline void pci_iounmap(struct pci_dev *dev, void __iomem *p) { } @@ -251,15 +251,15 @@ static inline void *phys_to_virt(unsigned long address) /* * Change "struct page" to physical address. */ -static inline void *__ioremap(unsigned long offset, unsigned long size, - unsigned long flags) +static inline void __iomem *__ioremap(unsigned long offset, unsigned long size, + unsigned long flags) { - return (void *) offset; + return (void __iomem *) offset; } -static inline void *ioremap(unsigned long offset, unsigned long size) +static inline void __iomem *ioremap(unsigned long offset, unsigned long size) { - return (void *) offset; + return (void __iomem *)(offset & ~0x20000000); } /* @@ -267,14 +267,14 @@ static inline void *ioremap(unsigned long offset, unsigned long size) * area. it's useful if some control registers are in such an area and write * combining or read caching is not desirable: */ -static inline void *ioremap_nocache(unsigned long offset, unsigned long size) +static inline void __iomem *ioremap_nocache(unsigned long offset, unsigned long size) { - return (void *) (offset | 0x20000000); + return (void __iomem *) (offset | 0x20000000); } #define ioremap_wc ioremap_nocache -static inline void iounmap(void *addr) +static inline void iounmap(void __iomem *addr) { } diff --git a/arch/mn10300/include/asm/ipc.h b/arch/mn10300/include/asm/ipc.h deleted file mode 100644 index a46e3d9c2a3..00000000000 --- a/arch/mn10300/include/asm/ipc.h +++ /dev/null @@ -1 +0,0 @@ -#include <asm-generic/ipc.h> diff --git a/arch/mn10300/include/asm/ipcbuf.h b/arch/mn10300/include/asm/ipcbuf.h deleted file mode 100644 index f6f63d44827..00000000000 --- a/arch/mn10300/include/asm/ipcbuf.h +++ /dev/null @@ -1,29 +0,0 @@ -#ifndef _ASM_IPCBUF_H -#define _ASM_IPCBUF_H - -/* - * The ipc64_perm structure for MN10300 architecture. - * Note extra padding because this structure is passed back and forth - * between kernel and user space. - * - * Pad space is left for: - * - 32-bit mode_t and seq - * - 2 miscellaneous 32-bit values - */ - -struct ipc64_perm -{ - __kernel_key_t key; - __kernel_uid32_t uid; - __kernel_gid32_t gid; - __kernel_uid32_t cuid; - __kernel_gid32_t cgid; - __kernel_mode_t mode; - unsigned short __pad1; - unsigned short seq; - unsigned short __pad2; - unsigned long __unused1; - unsigned long __unused2; -}; - -#endif /* _ASM_IPCBUF_H */ diff --git a/arch/mn10300/include/asm/irqflags.h b/arch/mn10300/include/asm/irqflags.h index 7a7ae12c711..8730c0a3c37 100644 --- a/arch/mn10300/include/asm/irqflags.h +++ b/arch/mn10300/include/asm/irqflags.h @@ -13,14 +13,13 @@ #define _ASM_IRQFLAGS_H #include <asm/cpu-regs.h> -#ifndef __ASSEMBLY__ -#include <linux/smp.h> -#endif +/* linux/smp.h <- linux/irqflags.h needs asm/smp.h first */ +#include <asm/smp.h> /* * interrupt control * - "disabled": run in IM1/2 - * - level 0 - GDB stub + * - level 0 - kernel debugger * - level 1 - virtual serial DMA (if present) * - level 5 - normal interrupt priority * - level 6 - timer interrupt diff --git a/arch/mn10300/include/asm/kgdb.h b/arch/mn10300/include/asm/kgdb.h new file mode 100644 index 00000000000..eb245f18a70 --- /dev/null +++ b/arch/mn10300/include/asm/kgdb.h @@ -0,0 +1,81 @@ +/* Kernel debugger for MN10300 + * + * Copyright (C) 2010 Red Hat, Inc. All Rights Reserved. + * Written by David Howells (dhowells@redhat.com) + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public Licence + * as published by the Free Software Foundation; either version + * 2 of the Licence, or (at your option) any later version. + */ + +#ifndef _ASM_KGDB_H +#define _ASM_KGDB_H + +/* + * BUFMAX defines the maximum number of characters in inbound/outbound + * buffers at least NUMREGBYTES*2 are needed for register packets + * Longer buffer is needed to list all threads + */ +#define BUFMAX 1024 + +/* + * Note that this register image is in a different order than the register + * image that Linux produces at interrupt time. + */ +enum regnames { + GDB_FR_D0 = 0, + GDB_FR_D1 = 1, + GDB_FR_D2 = 2, + GDB_FR_D3 = 3, + GDB_FR_A0 = 4, + GDB_FR_A1 = 5, + GDB_FR_A2 = 6, + GDB_FR_A3 = 7, + + GDB_FR_SP = 8, + GDB_FR_PC = 9, + GDB_FR_MDR = 10, + GDB_FR_EPSW = 11, + GDB_FR_LIR = 12, + GDB_FR_LAR = 13, + GDB_FR_MDRQ = 14, + + GDB_FR_E0 = 15, + GDB_FR_E1 = 16, + GDB_FR_E2 = 17, + GDB_FR_E3 = 18, + GDB_FR_E4 = 19, + GDB_FR_E5 = 20, + GDB_FR_E6 = 21, + GDB_FR_E7 = 22, + + GDB_FR_SSP = 23, + GDB_FR_MSP = 24, + GDB_FR_USP = 25, + GDB_FR_MCRH = 26, + GDB_FR_MCRL = 27, + GDB_FR_MCVF = 28, + + GDB_FR_FPCR = 29, + GDB_FR_DUMMY0 = 30, + GDB_FR_DUMMY1 = 31, + + GDB_FR_FS0 = 32, + + GDB_FR_SIZE = 64, +}; + +#define GDB_ORIG_D0 41 +#define NUMREGBYTES (GDB_FR_SIZE*4) + +static inline void arch_kgdb_breakpoint(void) +{ + asm(".globl __arch_kgdb_breakpoint; __arch_kgdb_breakpoint: break"); +} +extern u8 __arch_kgdb_breakpoint; + +#define BREAK_INSTR_SIZE 1 +#define CACHE_FLUSH_IS_SAFE 1 + +#endif /* _ASM_KGDB_H */ diff --git a/arch/mn10300/include/asm/mmu_context.h b/arch/mn10300/include/asm/mmu_context.h index c8f6c82672a..75dbe696f83 100644 --- a/arch/mn10300/include/asm/mmu_context.h +++ b/arch/mn10300/include/asm/mmu_context.h @@ -22,7 +22,7 @@ #ifndef _ASM_MMU_CONTEXT_H #define _ASM_MMU_CONTEXT_H -#include <asm/atomic.h> +#include <linux/atomic.h> #include <asm/pgalloc.h> #include <asm/tlbflush.h> #include <asm-generic/mm_hooks.h> @@ -71,7 +71,7 @@ static inline unsigned long allocate_mmu_context(struct mm_struct *mm) local_flush_tlb_all(); /* fix the TLB version if needed (we avoid version #0 so as to - * distingush MMU_NO_CONTEXT) */ + * distinguish MMU_NO_CONTEXT) */ if (!mc) *pmc = mc = MMU_CONTEXT_FIRST_VERSION; } diff --git a/arch/mn10300/include/asm/module.h b/arch/mn10300/include/asm/module.h index 5d7057d0149..6571103b051 100644 --- a/arch/mn10300/include/asm/module.h +++ b/arch/mn10300/include/asm/module.h @@ -12,12 +12,7 @@ #ifndef _ASM_MODULE_H #define _ASM_MODULE_H -struct mod_arch_specific { -}; - -#define Elf_Shdr Elf32_Shdr -#define Elf_Sym Elf32_Sym -#define Elf_Ehdr Elf32_Ehdr +#include <asm-generic/module.h> /* * Include the MN10300 architecture version. diff --git a/arch/mn10300/include/asm/pci.h b/arch/mn10300/include/asm/pci.h index 6095a28561d..5f70af25c7d 100644 --- a/arch/mn10300/include/asm/pci.h +++ b/arch/mn10300/include/asm/pci.h @@ -44,12 +44,10 @@ extern void unit_pci_init(void); #define pcibios_assign_all_busses() 0 #endif -extern unsigned long pci_mem_start; #define PCIBIOS_MIN_IO 0xBE000004 #define PCIBIOS_MIN_MEM 0xB8000000 void pcibios_set_master(struct pci_dev *dev); -void pcibios_penalize_isa_irq(int irq); /* Dynamic DMA mapping stuff. * i386 has everything mapped statically. @@ -85,22 +83,6 @@ extern int pci_mmap_page_range(struct pci_dev *dev, struct vm_area_struct *vma, /* implement the pci_ DMA API in terms of the generic device dma_ one */ #include <asm-generic/pci-dma-compat.h> -/** - * pcibios_resource_to_bus - convert resource to PCI bus address - * @dev: device which owns this resource - * @region: converted bus-centric region (start,end) - * @res: resource to convert - * - * Convert a resource to a PCI device bus address or bus window. - */ -extern void pcibios_resource_to_bus(struct pci_dev *dev, - struct pci_bus_region *region, - struct resource *res); - -extern void pcibios_bus_to_resource(struct pci_dev *dev, - struct resource *res, - struct pci_bus_region *region); - static inline struct resource * pcibios_select_root(struct pci_dev *pdev, struct resource *res) { @@ -119,4 +101,6 @@ static inline int pci_get_legacy_ide_irq(struct pci_dev *dev, int channel) return channel ? 15 : 14; } +#include <asm-generic/pci_iomap.h> + #endif /* _ASM_PCI_H */ diff --git a/arch/mn10300/include/asm/pgalloc.h b/arch/mn10300/include/asm/pgalloc.h index 146bacf193e..0f25d5fa86f 100644 --- a/arch/mn10300/include/asm/pgalloc.h +++ b/arch/mn10300/include/asm/pgalloc.h @@ -46,6 +46,7 @@ static inline void pte_free_kernel(struct mm_struct *mm, pte_t *pte) static inline void pte_free(struct mm_struct *mm, struct page *pte) { + pgtable_page_dtor(pte); __free_page(pte); } diff --git a/arch/mn10300/include/asm/pgtable.h b/arch/mn10300/include/asm/pgtable.h index a1e894b5f65..2ddaa67e798 100644 --- a/arch/mn10300/include/asm/pgtable.h +++ b/arch/mn10300/include/asm/pgtable.h @@ -486,9 +486,6 @@ extern void update_mmu_cache(struct vm_area_struct *vma, #define kern_addr_valid(addr) (1) -#define io_remap_pfn_range(vma, vaddr, pfn, size, prot) \ - remap_pfn_range((vma), (vaddr), (pfn), (size), (prot)) - #define MK_IOSPACE_PFN(space, pfn) (pfn) #define GET_IOSPACE(pfn) 0 #define GET_PFN(pfn) (pfn) diff --git a/arch/mn10300/include/asm/posix_types.h b/arch/mn10300/include/asm/posix_types.h deleted file mode 100644 index 56ffbc15879..00000000000 --- a/arch/mn10300/include/asm/posix_types.h +++ /dev/null @@ -1,137 +0,0 @@ -/* MN10300 POSIX types - * - * Copyright (C) 2007 Matsushita Electric Industrial Co., Ltd. - * Copyright (C) 2007 Red Hat, Inc. All Rights Reserved. - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public Licence - * as published by the Free Software Foundation; either version - * 2 of the Licence, or (at your option) any later version. - */ -#ifndef _ASM_POSIX_TYPES_H -#define _ASM_POSIX_TYPES_H - -/* - * This file is generally used by user-level software, so you need to - * be a little careful about namespace pollution etc. Also, we cannot - * assume GCC is being used. - */ - -typedef unsigned long __kernel_ino_t; -typedef unsigned short __kernel_mode_t; -typedef unsigned short __kernel_nlink_t; -typedef long __kernel_off_t; -typedef int __kernel_pid_t; -typedef unsigned short __kernel_ipc_pid_t; -typedef unsigned short __kernel_uid_t; -typedef unsigned short __kernel_gid_t; -#if __GNUC__ == 4 -typedef unsigned int __kernel_size_t; -typedef signed int __kernel_ssize_t; -#else -typedef unsigned long __kernel_size_t; -typedef signed long __kernel_ssize_t; -#endif -typedef int __kernel_ptrdiff_t; -typedef long __kernel_time_t; -typedef long __kernel_suseconds_t; -typedef long __kernel_clock_t; -typedef int __kernel_timer_t; -typedef int __kernel_clockid_t; -typedef int __kernel_daddr_t; -typedef char * __kernel_caddr_t; -typedef unsigned short __kernel_uid16_t; -typedef unsigned short __kernel_gid16_t; -typedef unsigned int __kernel_uid32_t; -typedef unsigned int __kernel_gid32_t; - -typedef unsigned short __kernel_old_uid_t; -typedef unsigned short __kernel_old_gid_t; -typedef unsigned short __kernel_old_dev_t; - -#ifdef __GNUC__ -typedef long long __kernel_loff_t; -#endif - -typedef struct { -#if defined(__KERNEL__) || defined(__USE_ALL) - int val[2]; -#else /* !defined(__KERNEL__) && !defined(__USE_ALL) */ - int __val[2]; -#endif /* !defined(__KERNEL__) && !defined(__USE_ALL) */ -} __kernel_fsid_t; - -#if defined(__KERNEL__) || !defined(__GLIBC__) || (__GLIBC__ < 2) - -#undef __FD_SET -static inline void __FD_SET(unsigned long __fd, __kernel_fd_set *__fdsetp) -{ - unsigned long __tmp = __fd / __NFDBITS; - unsigned long __rem = __fd % __NFDBITS; - __fdsetp->fds_bits[__tmp] |= (1UL<<__rem); -} - -#undef __FD_CLR -static inline void __FD_CLR(unsigned long __fd, __kernel_fd_set *__fdsetp) -{ - unsigned long __tmp = __fd / __NFDBITS; - unsigned long __rem = __fd % __NFDBITS; - __fdsetp->fds_bits[__tmp] &= ~(1UL<<__rem); -} - - -#undef __FD_ISSET -static inline int __FD_ISSET(unsigned long __fd, const __kernel_fd_set *__p) -{ - unsigned long __tmp = __fd / __NFDBITS; - unsigned long __rem = __fd % __NFDBITS; - return (__p->fds_bits[__tmp] & (1UL<<__rem)) != 0; -} - -/* - * This will unroll the loop for the normal constant case (8 ints, - * for a 256-bit fd_set) - */ -#undef __FD_ZERO -static inline void __FD_ZERO(__kernel_fd_set *__p) -{ - unsigned long *__tmp = __p->fds_bits; - int __i; - - if (__builtin_constant_p(__FDSET_LONGS)) { - switch (__FDSET_LONGS) { - case 16: - __tmp[ 0] = 0; __tmp[ 1] = 0; - __tmp[ 2] = 0; __tmp[ 3] = 0; - __tmp[ 4] = 0; __tmp[ 5] = 0; - __tmp[ 6] = 0; __tmp[ 7] = 0; - __tmp[ 8] = 0; __tmp[ 9] = 0; - __tmp[10] = 0; __tmp[11] = 0; - __tmp[12] = 0; __tmp[13] = 0; - __tmp[14] = 0; __tmp[15] = 0; - return; - - case 8: - __tmp[ 0] = 0; __tmp[ 1] = 0; - __tmp[ 2] = 0; __tmp[ 3] = 0; - __tmp[ 4] = 0; __tmp[ 5] = 0; - __tmp[ 6] = 0; __tmp[ 7] = 0; - return; - - case 4: - __tmp[ 0] = 0; __tmp[ 1] = 0; - __tmp[ 2] = 0; __tmp[ 3] = 0; - return; - } - } - __i = __FDSET_LONGS; - while (__i) { - __i--; - *__tmp = 0; - __tmp++; - } -} - -#endif /* defined(__KERNEL__) || !defined(__GLIBC__) || (__GLIBC__ < 2) */ - -#endif /* _ASM_POSIX_TYPES_H */ diff --git a/arch/mn10300/include/asm/processor.h b/arch/mn10300/include/asm/processor.h index 4c1b5cc14c1..8b80b19d0c8 100644 --- a/arch/mn10300/include/asm/processor.h +++ b/arch/mn10300/include/asm/processor.h @@ -119,35 +119,19 @@ struct thread_struct { /* * do necessary setup to start up a newly executed thread - * - need to discard the frame stacked by the kernel thread invoking the execve - * syscall (see RESTORE_ALL macro) */ static inline void start_thread(struct pt_regs *regs, unsigned long new_pc, unsigned long new_sp) { - struct thread_info *ti = current_thread_info(); - struct pt_regs *frame0; - set_fs(USER_DS); - - frame0 = thread_info_to_uregs(ti); - frame0->epsw = EPSW_nSL | EPSW_IE | EPSW_IM; - frame0->pc = new_pc; - frame0->sp = new_sp; - ti->frame = frame0; + regs->epsw = EPSW_nSL | EPSW_IE | EPSW_IM; + regs->pc = new_pc; + regs->sp = new_sp; } /* Free all resources held by a thread. */ extern void release_thread(struct task_struct *); -/* Prepare to copy thread state - unlazy all lazy status */ -extern void prepare_to_copy(struct task_struct *tsk); - -/* - * create a kernel thread without removing it from tasklists - */ -extern int kernel_thread(int (*fn)(void *), void *arg, unsigned long flags); - /* * Return saved PC of a blocked thread. */ diff --git a/arch/mn10300/include/asm/ptrace.h b/arch/mn10300/include/asm/ptrace.h index b6961811d44..838a3830010 100644 --- a/arch/mn10300/include/asm/ptrace.h +++ b/arch/mn10300/include/asm/ptrace.h @@ -11,89 +11,16 @@ #ifndef _ASM_PTRACE_H #define _ASM_PTRACE_H -#define PT_A3 0 -#define PT_A2 1 -#define PT_D3 2 -#define PT_D2 3 -#define PT_MCVF 4 -#define PT_MCRL 5 -#define PT_MCRH 6 -#define PT_MDRQ 7 -#define PT_E1 8 -#define PT_E0 9 -#define PT_E7 10 -#define PT_E6 11 -#define PT_E5 12 -#define PT_E4 13 -#define PT_E3 14 -#define PT_E2 15 -#define PT_SP 16 -#define PT_LAR 17 -#define PT_LIR 18 -#define PT_MDR 19 -#define PT_A1 20 -#define PT_A0 21 -#define PT_D1 22 -#define PT_D0 23 -#define PT_ORIG_D0 24 -#define PT_EPSW 25 -#define PT_PC 26 -#define NR_PTREGS 27 +#include <uapi/asm/ptrace.h> -/* - * This defines the way registers are stored in the event of an exception - * - the strange order is due to the MOVM instruction - */ -struct pt_regs { - unsigned long a3; /* syscall arg 3 */ - unsigned long a2; /* syscall arg 4 */ - unsigned long d3; /* syscall arg 5 */ - unsigned long d2; /* syscall arg 6 */ - unsigned long mcvf; - unsigned long mcrl; - unsigned long mcrh; - unsigned long mdrq; - unsigned long e1; - unsigned long e0; - unsigned long e7; - unsigned long e6; - unsigned long e5; - unsigned long e4; - unsigned long e3; - unsigned long e2; - unsigned long sp; - unsigned long lar; - unsigned long lir; - unsigned long mdr; - unsigned long a1; - unsigned long a0; /* syscall arg 1 */ - unsigned long d1; /* syscall arg 2 */ - unsigned long d0; /* syscall ret */ - struct pt_regs *next; /* next frame pointer */ - unsigned long orig_d0; /* syscall number */ - unsigned long epsw; - unsigned long pc; -}; - -/* Arbitrarily choose the same ptrace numbers as used by the Sparc code. */ -#define PTRACE_GETREGS 12 -#define PTRACE_SETREGS 13 -#define PTRACE_GETFPREGS 14 -#define PTRACE_SETFPREGS 15 - -/* options set using PTRACE_SETOPTIONS */ -#define PTRACE_O_TRACESYSGOOD 0x00000001 - -#ifdef __KERNEL__ #define user_mode(regs) (((regs)->epsw & EPSW_nSL) == EPSW_nSL) #define instruction_pointer(regs) ((regs)->pc) #define user_stack_pointer(regs) ((regs)->sp) -extern void show_regs(struct pt_regs *); +#define current_pt_regs() current_frame() #define arch_has_single_step() (1) #define profile_pc(regs) ((regs)->pc) -#endif /* __KERNEL__ */ #endif /* _ASM_PTRACE_H */ diff --git a/arch/mn10300/include/asm/reset-regs.h b/arch/mn10300/include/asm/reset-regs.h index 10c7502a113..8ca2a42d365 100644 --- a/arch/mn10300/include/asm/reset-regs.h +++ b/arch/mn10300/include/asm/reset-regs.h @@ -17,10 +17,6 @@ #ifdef __KERNEL__ -#ifdef CONFIG_MN10300_WD_TIMER -#define ARCH_HAS_NMI_WATCHDOG /* See include/linux/nmi.h */ -#endif - /* * watchdog timer registers */ diff --git a/arch/mn10300/include/asm/setup.h b/arch/mn10300/include/asm/setup.h index c229d1e3f99..fb024555d2a 100644 --- a/arch/mn10300/include/asm/setup.h +++ b/arch/mn10300/include/asm/setup.h @@ -11,8 +11,8 @@ #ifndef _ASM_SETUP_H #define _ASM_SETUP_H -#ifdef __KERNEL__ +#include <uapi/asm/setup.h> + extern void __init unit_setup(void); extern void __init unit_init_IRQ(void); -#endif #endif /* _ASM_SETUP_H */ diff --git a/arch/mn10300/include/asm/signal.h b/arch/mn10300/include/asm/signal.h index 1865d72a86f..214ff5e9fe6 100644 --- a/arch/mn10300/include/asm/signal.h +++ b/arch/mn10300/include/asm/signal.h @@ -11,12 +11,8 @@ #ifndef _ASM_SIGNAL_H #define _ASM_SIGNAL_H -#include <linux/types.h> +#include <uapi/asm/signal.h> -/* Avoid too many header ordering problems. */ -struct siginfo; - -#ifdef __KERNEL__ /* Most things should be clean enough to redefine this at will, if care is taken to make libc match. */ @@ -30,142 +26,8 @@ typedef struct { unsigned long sig[_NSIG_WORDS]; } sigset_t; -#else -/* Here we must cater to libcs that poke about in kernel headers. */ - -#define NSIG 32 -typedef unsigned long sigset_t; - -#endif /* __KERNEL__ */ - -#define SIGHUP 1 -#define SIGINT 2 -#define SIGQUIT 3 -#define SIGILL 4 -#define SIGTRAP 5 -#define SIGABRT 6 -#define SIGIOT 6 -#define SIGBUS 7 -#define SIGFPE 8 -#define SIGKILL 9 -#define SIGUSR1 10 -#define SIGSEGV 11 -#define SIGUSR2 12 -#define SIGPIPE 13 -#define SIGALRM 14 -#define SIGTERM 15 -#define SIGSTKFLT 16 -#define SIGCHLD 17 -#define SIGCONT 18 -#define SIGSTOP 19 -#define SIGTSTP 20 -#define SIGTTIN 21 -#define SIGTTOU 22 -#define SIGURG 23 -#define SIGXCPU 24 -#define SIGXFSZ 25 -#define SIGVTALRM 26 -#define SIGPROF 27 -#define SIGWINCH 28 -#define SIGIO 29 -#define SIGPOLL SIGIO -/* -#define SIGLOST 29 -*/ -#define SIGPWR 30 -#define SIGSYS 31 -#define SIGUNUSED 31 - -/* These should not be considered constants from userland. */ -#define SIGRTMIN 32 -#define SIGRTMAX _NSIG - -/* - * SA_FLAGS values: - * - * SA_ONSTACK indicates that a registered stack_t will be used. - * SA_RESTART flag to get restarting signals (which were the default long ago) - * SA_NOCLDSTOP flag to turn off SIGCHLD when children stop. - * SA_RESETHAND clears the handler when the signal is delivered. - * SA_NOCLDWAIT flag on SIGCHLD to inhibit zombies. - * SA_NODEFER prevents the current signal from being masked in the handler. - * - * SA_ONESHOT and SA_NOMASK are the historical Linux names for the Single - * Unix names RESETHAND and NODEFER respectively. - */ -#define SA_NOCLDSTOP 0x00000001U -#define SA_NOCLDWAIT 0x00000002U -#define SA_SIGINFO 0x00000004U -#define SA_ONSTACK 0x08000000U -#define SA_RESTART 0x10000000U -#define SA_NODEFER 0x40000000U -#define SA_RESETHAND 0x80000000U - -#define SA_NOMASK SA_NODEFER -#define SA_ONESHOT SA_RESETHAND - -#define SA_RESTORER 0x04000000 - -/* - * sigaltstack controls - */ -#define SS_ONSTACK 1 -#define SS_DISABLE 2 +#define __ARCH_HAS_SA_RESTORER -#define MINSIGSTKSZ 2048 -#define SIGSTKSZ 8192 - -#include <asm-generic/signal-defs.h> - -#ifdef __KERNEL__ -struct old_sigaction { - __sighandler_t sa_handler; - old_sigset_t sa_mask; - unsigned long sa_flags; - __sigrestore_t sa_restorer; -}; - -struct sigaction { - __sighandler_t sa_handler; - unsigned long sa_flags; - __sigrestore_t sa_restorer; - sigset_t sa_mask; /* mask last for extensibility */ -}; - -struct k_sigaction { - struct sigaction sa; -}; -#else -/* Here we must cater to libcs that poke about in kernel headers. */ - -struct sigaction { - union { - __sighandler_t _sa_handler; - void (*_sa_sigaction)(int, struct siginfo *, void *); - } _u; - sigset_t sa_mask; - unsigned long sa_flags; - void (*sa_restorer)(void); -}; - -#define sa_handler _u._sa_handler -#define sa_sigaction _u._sa_sigaction - -#endif /* __KERNEL__ */ - -typedef struct sigaltstack { - void __user *ss_sp; - int ss_flags; - size_t ss_size; -} stack_t; - -#ifdef __KERNEL__ #include <asm/sigcontext.h> - -struct pt_regs; -#define ptrace_signal_deliver(regs, cookie) do { } while (0) - -#endif /* __KERNEL__ */ - #endif /* _ASM_SIGNAL_H */ diff --git a/arch/mn10300/include/asm/smp.h b/arch/mn10300/include/asm/smp.h index a3930e43a95..56c42417d42 100644 --- a/arch/mn10300/include/asm/smp.h +++ b/arch/mn10300/include/asm/smp.h @@ -24,6 +24,7 @@ #ifndef __ASSEMBLY__ #include <linux/threads.h> #include <linux/cpumask.h> +#include <linux/thread_info.h> #endif #ifdef CONFIG_SMP @@ -34,7 +35,7 @@ #define LOCAL_TIMER_IPI 193 #define FLUSH_CACHE_IPI 194 #define CALL_FUNCTION_NMI_IPI 195 -#define GDB_NMI_IPI 196 +#define DEBUGGER_NMI_IPI 196 #define SMP_BOOT_IRQ 195 @@ -43,6 +44,7 @@ #define LOCAL_TIMER_GxICR_LV GxICR_LEVEL_4 #define FLUSH_CACHE_GxICR_LV GxICR_LEVEL_0 #define SMP_BOOT_GxICR_LV GxICR_LEVEL_0 +#define DEBUGGER_GxICR_LV CONFIG_DEBUGGER_IRQ_LEVEL #define TIME_OUT_COUNT_BOOT_IPI 100 #define DELAY_TIME_BOOT_IPI 75000 @@ -61,8 +63,9 @@ * An alternate way of dealing with this could be to use the EPSW.S bits to * cache this information for systems with up to four CPUs. */ +#define arch_smp_processor_id() (CPUID) #if 0 -#define raw_smp_processor_id() (CPUID) +#define raw_smp_processor_id() (arch_smp_processor_id()) #else #define raw_smp_processor_id() (current_thread_info()->cpu) #endif @@ -83,7 +86,7 @@ extern cpumask_t cpu_boot_map; extern void smp_init_cpus(void); extern void smp_cache_interrupt(void); extern void send_IPI_allbutself(int irq); -extern int smp_nmi_call_function(smp_call_func_t func, void *info, int wait); +extern int smp_nmi_call_function(void (*func)(void *), void *info, int wait); extern void arch_send_call_function_single_ipi(int cpu); extern void arch_send_call_function_ipi_mask(const struct cpumask *mask); @@ -98,6 +101,7 @@ extern void __cpu_die(unsigned int cpu); #ifndef __ASSEMBLY__ static inline void smp_init_cpus(void) {} +#define raw_smp_processor_id() 0 #endif /* __ASSEMBLY__ */ #endif /* CONFIG_SMP */ diff --git a/arch/mn10300/include/asm/spinlock.h b/arch/mn10300/include/asm/spinlock.h index 93429154e89..1ae580f3893 100644 --- a/arch/mn10300/include/asm/spinlock.h +++ b/arch/mn10300/include/asm/spinlock.h @@ -11,7 +11,7 @@ #ifndef _ASM_SPINLOCK_H #define _ASM_SPINLOCK_H -#include <asm/atomic.h> +#include <linux/atomic.h> #include <asm/rwlock.h> #include <asm/page.h> diff --git a/arch/mn10300/include/asm/switch_to.h b/arch/mn10300/include/asm/switch_to.h new file mode 100644 index 00000000000..393d311735c --- /dev/null +++ b/arch/mn10300/include/asm/switch_to.h @@ -0,0 +1,49 @@ +/* MN10300 task switching definitions + * + * Copyright (C) 2007 Red Hat, Inc. All Rights Reserved. + * Written by David Howells (dhowells@redhat.com) + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public Licence + * as published by the Free Software Foundation; either version + * 2 of the Licence, or (at your option) any later version. + */ +#ifndef _ASM_SWITCH_TO_H +#define _ASM_SWITCH_TO_H + +#include <asm/barrier.h> + +struct task_struct; +struct thread_struct; + +#if !defined(CONFIG_LAZY_SAVE_FPU) +struct fpu_state_struct; +extern asmlinkage void fpu_save(struct fpu_state_struct *); +#define switch_fpu(prev, next) \ + do { \ + if ((prev)->thread.fpu_flags & THREAD_HAS_FPU) { \ + (prev)->thread.fpu_flags &= ~THREAD_HAS_FPU; \ + (prev)->thread.uregs->epsw &= ~EPSW_FE; \ + fpu_save(&(prev)->thread.fpu_state); \ + } \ + } while (0) +#else +#define switch_fpu(prev, next) do {} while (0) +#endif + +/* context switching is now performed out-of-line in switch_to.S */ +extern asmlinkage +struct task_struct *__switch_to(struct thread_struct *prev, + struct thread_struct *next, + struct task_struct *prev_task); + +#define switch_to(prev, next, last) \ +do { \ + switch_fpu(prev, next); \ + current->thread.wchan = (u_long) __builtin_return_address(0); \ + (last) = __switch_to(&(prev)->thread, &(next)->thread, (prev)); \ + mb(); \ + current->thread.wchan = 0; \ +} while (0) + +#endif /* _ASM_SWITCH_TO_H */ diff --git a/arch/mn10300/include/asm/syscall.h b/arch/mn10300/include/asm/syscall.h new file mode 100644 index 00000000000..b44b0bb75a0 --- /dev/null +++ b/arch/mn10300/include/asm/syscall.h @@ -0,0 +1,117 @@ +/* Access to user system call parameters and results + * + * See asm-generic/syscall.h for function descriptions. + * + * Copyright (C) 2010 Red Hat, Inc. All Rights Reserved. + * Written by David Howells (dhowells@redhat.com) + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public Licence + * as published by the Free Software Foundation; either version + * 2 of the Licence, or (at your option) any later version. + */ + +#ifndef _ASM_SYSCALL_H +#define _ASM_SYSCALL_H + +#include <linux/sched.h> +#include <linux/err.h> + +extern const unsigned long sys_call_table[]; + +static inline int syscall_get_nr(struct task_struct *task, struct pt_regs *regs) +{ + return regs->orig_d0; +} + +static inline void syscall_rollback(struct task_struct *task, + struct pt_regs *regs) +{ + regs->d0 = regs->orig_d0; +} + +static inline long syscall_get_error(struct task_struct *task, + struct pt_regs *regs) +{ + unsigned long error = regs->d0; + return IS_ERR_VALUE(error) ? error : 0; +} + +static inline long syscall_get_return_value(struct task_struct *task, + struct pt_regs *regs) +{ + return regs->d0; +} + +static inline void syscall_set_return_value(struct task_struct *task, + struct pt_regs *regs, + int error, long val) +{ + regs->d0 = (long) error ?: val; +} + +static inline void syscall_get_arguments(struct task_struct *task, + struct pt_regs *regs, + unsigned int i, unsigned int n, + unsigned long *args) +{ + switch (i) { + case 0: + if (!n--) break; + *args++ = regs->a0; + case 1: + if (!n--) break; + *args++ = regs->d1; + case 2: + if (!n--) break; + *args++ = regs->a3; + case 3: + if (!n--) break; + *args++ = regs->a2; + case 4: + if (!n--) break; + *args++ = regs->d3; + case 5: + if (!n--) break; + *args++ = regs->d2; + case 6: + if (!n--) break; + default: + BUG(); + break; + } +} + +static inline void syscall_set_arguments(struct task_struct *task, + struct pt_regs *regs, + unsigned int i, unsigned int n, + const unsigned long *args) +{ + switch (i) { + case 0: + if (!n--) break; + regs->a0 = *args++; + case 1: + if (!n--) break; + regs->d1 = *args++; + case 2: + if (!n--) break; + regs->a3 = *args++; + case 3: + if (!n--) break; + regs->a2 = *args++; + case 4: + if (!n--) break; + regs->d3 = *args++; + case 5: + if (!n--) break; + regs->d2 = *args++; + case 6: + if (!n--) break; + default: + BUG(); + break; + } +} + +#endif /* _ASM_SYSCALL_H */ diff --git a/arch/mn10300/include/asm/system.h b/arch/mn10300/include/asm/system.h deleted file mode 100644 index 8ff3e5aaca4..00000000000 --- a/arch/mn10300/include/asm/system.h +++ /dev/null @@ -1,102 +0,0 @@ -/* MN10300 System definitions - * - * Copyright (C) 2007 Red Hat, Inc. All Rights Reserved. - * Written by David Howells (dhowells@redhat.com) - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public Licence - * as published by the Free Software Foundation; either version - * 2 of the Licence, or (at your option) any later version. - */ -#ifndef _ASM_SYSTEM_H -#define _ASM_SYSTEM_H - -#include <asm/cpu-regs.h> -#include <asm/intctl-regs.h> - -#ifdef __KERNEL__ -#ifndef __ASSEMBLY__ - -#include <linux/kernel.h> -#include <linux/irqflags.h> -#include <asm/atomic.h> - -#if !defined(CONFIG_LAZY_SAVE_FPU) -struct fpu_state_struct; -extern asmlinkage void fpu_save(struct fpu_state_struct *); -#define switch_fpu(prev, next) \ - do { \ - if ((prev)->thread.fpu_flags & THREAD_HAS_FPU) { \ - (prev)->thread.fpu_flags &= ~THREAD_HAS_FPU; \ - (prev)->thread.uregs->epsw &= ~EPSW_FE; \ - fpu_save(&(prev)->thread.fpu_state); \ - } \ - } while (0) -#else -#define switch_fpu(prev, next) do {} while (0) -#endif - -struct task_struct; -struct thread_struct; - -extern asmlinkage -struct task_struct *__switch_to(struct thread_struct *prev, - struct thread_struct *next, - struct task_struct *prev_task); - -/* context switching is now performed out-of-line in switch_to.S */ -#define switch_to(prev, next, last) \ -do { \ - switch_fpu(prev, next); \ - current->thread.wchan = (u_long) __builtin_return_address(0); \ - (last) = __switch_to(&(prev)->thread, &(next)->thread, (prev)); \ - mb(); \ - current->thread.wchan = 0; \ -} while (0) - -#define arch_align_stack(x) (x) - -#define nop() asm volatile ("nop") - -/* - * Force strict CPU ordering. - * And yes, this is required on UP too when we're talking - * to devices. - * - * For now, "wmb()" doesn't actually do anything, as all - * Intel CPU's follow what Intel calls a *Processor Order*, - * in which all writes are seen in the program order even - * outside the CPU. - * - * I expect future Intel CPU's to have a weaker ordering, - * but I'd also expect them to finally get their act together - * and add some real memory barriers if so. - * - * Some non intel clones support out of order store. wmb() ceases to be a - * nop for these. - */ - -#define mb() asm volatile ("": : :"memory") -#define rmb() mb() -#define wmb() asm volatile ("": : :"memory") - -#ifdef CONFIG_SMP -#define smp_mb() mb() -#define smp_rmb() rmb() -#define smp_wmb() wmb() -#define set_mb(var, value) do { xchg(&var, value); } while (0) -#else /* CONFIG_SMP */ -#define smp_mb() barrier() -#define smp_rmb() barrier() -#define smp_wmb() barrier() -#define set_mb(var, value) do { var = value; mb(); } while (0) -#endif /* CONFIG_SMP */ - -#define set_wmb(var, value) do { var = value; wmb(); } while (0) - -#define read_barrier_depends() do {} while (0) -#define smp_read_barrier_depends() do {} while (0) - -#endif /* !__ASSEMBLY__ */ -#endif /* __KERNEL__ */ -#endif /* _ASM_SYSTEM_H */ diff --git a/arch/mn10300/include/asm/termios.h b/arch/mn10300/include/asm/termios.h index dd7cf617e11..c2e29c75dfa 100644 --- a/arch/mn10300/include/asm/termios.h +++ b/arch/mn10300/include/asm/termios.h @@ -1,27 +1,8 @@ #ifndef _ASM_TERMIOS_H #define _ASM_TERMIOS_H -#include <asm/termbits.h> -#include <asm/ioctls.h> +#include <uapi/asm/termios.h> -struct winsize { - unsigned short ws_row; - unsigned short ws_col; - unsigned short ws_xpixel; - unsigned short ws_ypixel; -}; - -#define NCC 8 -struct termio { - unsigned short c_iflag; /* input mode flags */ - unsigned short c_oflag; /* output mode flags */ - unsigned short c_cflag; /* control mode flags */ - unsigned short c_lflag; /* local mode flags */ - unsigned char c_line; /* line discipline */ - unsigned char c_cc[NCC]; /* control characters */ -}; - -#ifdef __KERNEL__ /* intr=^C quit=^| erase=del kill=^U eof=^D vtime=\0 vmin=\1 sxtc=\0 start=^Q stop=^S susp=^Z eol=\0 @@ -29,64 +10,4 @@ struct termio { eol2=\0 */ #define INIT_C_CC "\003\034\177\025\004\0\1\0\021\023\032\0\022\017\027\026\0" -#endif - -/* modem lines */ -#define TIOCM_LE 0x001 -#define TIOCM_DTR 0x002 -#define TIOCM_RTS 0x004 -#define TIOCM_ST 0x008 -#define TIOCM_SR 0x010 -#define TIOCM_CTS 0x020 -#define TIOCM_CAR 0x040 -#define TIOCM_RNG 0x080 -#define TIOCM_DSR 0x100 -#define TIOCM_CD TIOCM_CAR -#define TIOCM_RI TIOCM_RNG -#define TIOCM_OUT1 0x2000 -#define TIOCM_OUT2 0x4000 -#define TIOCM_LOOP 0x8000 - -#define TIOCM_MODEM_BITS TIOCM_OUT2 /* IRDA support */ - -/* - * Translate a "termio" structure into a "termios". Ugh. - */ -#define SET_LOW_TERMIOS_BITS(termios, termio, x) { \ - unsigned short __tmp; \ - get_user(__tmp, &(termio)->x); \ - *(unsigned short *) &(termios)->x = __tmp; \ -} - -#define user_termio_to_kernel_termios(termios, termio) \ -({ \ - SET_LOW_TERMIOS_BITS(termios, termio, c_iflag); \ - SET_LOW_TERMIOS_BITS(termios, termio, c_oflag); \ - SET_LOW_TERMIOS_BITS(termios, termio, c_cflag); \ - SET_LOW_TERMIOS_BITS(termios, termio, c_lflag); \ - copy_from_user((termios)->c_cc, (termio)->c_cc, NCC); \ -}) - -/* - * Translate a "termios" structure into a "termio". Ugh. - */ -#define kernel_termios_to_user_termio(termio, termios) \ -({ \ - put_user((termios)->c_iflag, &(termio)->c_iflag); \ - put_user((termios)->c_oflag, &(termio)->c_oflag); \ - put_user((termios)->c_cflag, &(termio)->c_cflag); \ - put_user((termios)->c_lflag, &(termio)->c_lflag); \ - put_user((termios)->c_line, &(termio)->c_line); \ - copy_to_user((termio)->c_cc, (termios)->c_cc, NCC); \ -}) - -#define user_termios_to_kernel_termios(k, u) \ - copy_from_user(k, u, sizeof(struct termios2)) -#define kernel_termios_to_user_termios(u, k) \ - copy_to_user(u, k, sizeof(struct termios2)) -#define user_termios_to_kernel_termios_1(k, u) \ - copy_from_user(k, u, sizeof(struct termios)) -#define kernel_termios_to_user_termios_1(u, k) \ - copy_to_user(u, k, sizeof(struct termios)) - #endif /* _ASM_TERMIOS_H */ diff --git a/arch/mn10300/include/asm/thread_info.h b/arch/mn10300/include/asm/thread_info.h index aa07a4a5d79..bf280eaccd3 100644 --- a/arch/mn10300/include/asm/thread_info.h +++ b/arch/mn10300/include/asm/thread_info.h @@ -16,12 +16,12 @@ #include <asm/page.h> -#define PREEMPT_ACTIVE 0x10000000 - #ifdef CONFIG_4KSTACKS #define THREAD_SIZE (4096) +#define THREAD_SIZE_ORDER (0) #else #define THREAD_SIZE (8192) +#define THREAD_SIZE_ORDER (1) #endif #define STACK_WARN (THREAD_SIZE / 8) @@ -120,16 +120,9 @@ static inline unsigned long current_stack_pointer(void) return sp; } -#define __HAVE_ARCH_THREAD_INFO_ALLOCATOR - -/* thread information allocation */ -#ifdef CONFIG_DEBUG_STACK_USAGE -#define alloc_thread_info(tsk) kzalloc(THREAD_SIZE, GFP_KERNEL) -#else -#define alloc_thread_info(tsk) kmalloc(THREAD_SIZE, GFP_KERNEL) +#ifndef CONFIG_KGDB +void arch_release_thread_info(struct thread_info *ti); #endif - -#define free_thread_info(ti) kfree((ti)) #define get_thread_info(ti) get_task_struct((ti)->task) #define put_thread_info(ti) put_task_struct((ti)->task) @@ -159,16 +152,13 @@ static inline unsigned long current_stack_pointer(void) #define TIF_RESTORE_SIGMASK 5 /* restore signal mask in do_signal() */ #define TIF_POLLING_NRFLAG 16 /* true if poll_idle() is polling TIF_NEED_RESCHED */ #define TIF_MEMDIE 17 /* is terminating due to OOM killer */ -#define TIF_FREEZE 18 /* freezing for suspend */ #define _TIF_SYSCALL_TRACE +(1 << TIF_SYSCALL_TRACE) #define _TIF_NOTIFY_RESUME +(1 << TIF_NOTIFY_RESUME) #define _TIF_SIGPENDING +(1 << TIF_SIGPENDING) #define _TIF_NEED_RESCHED +(1 << TIF_NEED_RESCHED) #define _TIF_SINGLESTEP +(1 << TIF_SINGLESTEP) -#define _TIF_RESTORE_SIGMASK +(1 << TIF_RESTORE_SIGMASK) #define _TIF_POLLING_NRFLAG +(1 << TIF_POLLING_NRFLAG) -#define _TIF_FREEZE +(1 << TIF_FREEZE) #define _TIF_WORK_MASK 0x0000FFFE /* work to do on interrupt/exception return */ #define _TIF_ALLWORK_MASK 0x0000FFFF /* work to do on any return to u-space */ diff --git a/arch/mn10300/include/asm/timex.h b/arch/mn10300/include/asm/timex.h index bd4e90dfe6c..f8e66425cbf 100644 --- a/arch/mn10300/include/asm/timex.h +++ b/arch/mn10300/include/asm/timex.h @@ -11,7 +11,6 @@ #ifndef _ASM_TIMEX_H #define _ASM_TIMEX_H -#include <asm/hardirq.h> #include <unit/timex.h> #define TICK_SIZE (tick_nsec / 1000) @@ -30,16 +29,6 @@ static inline cycles_t get_cycles(void) extern int init_clockevents(void); extern int init_clocksource(void); -static inline void setup_jiffies_interrupt(int irq, - struct irqaction *action) -{ - u16 tmp; - setup_irq(irq, action); - set_intr_level(irq, NUM2GxICR_LEVEL(CONFIG_TIMER_IRQ_LEVEL)); - GxICR(irq) |= GxICR_ENABLE | GxICR_DETECT | GxICR_REQUEST; - tmp = GxICR(irq); -} - #endif /* __KERNEL__ */ #endif /* _ASM_TIMEX_H */ diff --git a/arch/mn10300/include/asm/types.h b/arch/mn10300/include/asm/types.h index 7b9f01042fd..3d6e48311be 100644 --- a/arch/mn10300/include/asm/types.h +++ b/arch/mn10300/include/asm/types.h @@ -11,28 +11,12 @@ #ifndef _ASM_TYPES_H #define _ASM_TYPES_H -#include <asm-generic/int-ll64.h> - -#ifndef __ASSEMBLY__ - -typedef unsigned short umode_t; - -#endif /* __ASSEMBLY__ */ +#include <uapi/asm/types.h> /* * These aren't exported outside the kernel to avoid name space clashes */ -#ifdef __KERNEL__ #define BITS_PER_LONG 32 -#ifndef __ASSEMBLY__ - -/* Dma addresses are 32-bits wide. */ -typedef u32 dma_addr_t; - -#endif /* __ASSEMBLY__ */ - -#endif /* __KERNEL__ */ - #endif /* _ASM_TYPES_H */ diff --git a/arch/mn10300/include/asm/uaccess.h b/arch/mn10300/include/asm/uaccess.h index 679dee0bbd0..537278746a1 100644 --- a/arch/mn10300/include/asm/uaccess.h +++ b/arch/mn10300/include/asm/uaccess.h @@ -15,6 +15,7 @@ * User space memory access functions */ #include <linux/thread_info.h> +#include <linux/kernel.h> #include <asm/page.h> #include <asm/errno.h> @@ -160,9 +161,10 @@ struct __large_struct { unsigned long buf[100]; }; #define __get_user_check(x, ptr, size) \ ({ \ + const __typeof__(*(ptr))* __guc_ptr = (ptr); \ int _e; \ - if (likely(__access_ok((unsigned long) (ptr), (size)))) \ - _e = __get_user_nocheck((x), (ptr), (size)); \ + if (likely(__access_ok((unsigned long) __guc_ptr, (size)))) \ + _e = __get_user_nocheck((x), __guc_ptr, (size)); \ else { \ _e = -EFAULT; \ (x) = (__typeof__(x))0; \ @@ -469,13 +471,13 @@ extern unsigned long __generic_copy_from_user(void *, const void __user *, #define __copy_to_user(to, from, n) \ ({ \ - might_sleep(); \ + might_fault(); \ __copy_to_user_inatomic((to), (from), (n)); \ }) #define __copy_from_user(to, from, n) \ ({ \ - might_sleep(); \ + might_fault(); \ __copy_from_user_inatomic((to), (from), (n)); \ }) diff --git a/arch/mn10300/include/asm/unistd.h b/arch/mn10300/include/asm/unistd.h index 9d056f51592..0522468f488 100644 --- a/arch/mn10300/include/asm/unistd.h +++ b/arch/mn10300/include/asm/unistd.h @@ -11,353 +11,14 @@ #ifndef _ASM_UNISTD_H #define _ASM_UNISTD_H -#define __NR_restart_syscall 0 -#define __NR_exit 1 -#define __NR_fork 2 -#define __NR_read 3 -#define __NR_write 4 -#define __NR_open 5 -#define __NR_close 6 -#define __NR_waitpid 7 -#define __NR_creat 8 -#define __NR_link 9 -#define __NR_unlink 10 -#define __NR_execve 11 -#define __NR_chdir 12 -#define __NR_time 13 -#define __NR_mknod 14 -#define __NR_chmod 15 -#define __NR_lchown 16 -#define __NR_break 17 -#define __NR_oldstat 18 -#define __NR_lseek 19 -#define __NR_getpid 20 -#define __NR_mount 21 -#define __NR_umount 22 -#define __NR_setuid 23 -#define __NR_getuid 24 -#define __NR_stime 25 -#define __NR_ptrace 26 -#define __NR_alarm 27 -#define __NR_oldfstat 28 -#define __NR_pause 29 -#define __NR_utime 30 -#define __NR_stty 31 -#define __NR_gtty 32 -#define __NR_access 33 -#define __NR_nice 34 -#define __NR_ftime 35 -#define __NR_sync 36 -#define __NR_kill 37 -#define __NR_rename 38 -#define __NR_mkdir 39 -#define __NR_rmdir 40 -#define __NR_dup 41 -#define __NR_pipe 42 -#define __NR_times 43 -#define __NR_prof 44 -#define __NR_brk 45 -#define __NR_setgid 46 -#define __NR_getgid 47 -#define __NR_signal 48 -#define __NR_geteuid 49 -#define __NR_getegid 50 -#define __NR_acct 51 -#define __NR_umount2 52 -#define __NR_lock 53 -#define __NR_ioctl 54 -#define __NR_fcntl 55 -#define __NR_mpx 56 -#define __NR_setpgid 57 -#define __NR_ulimit 58 -#define __NR_oldolduname 59 -#define __NR_umask 60 -#define __NR_chroot 61 -#define __NR_ustat 62 -#define __NR_dup2 63 -#define __NR_getppid 64 -#define __NR_getpgrp 65 -#define __NR_setsid 66 -#define __NR_sigaction 67 -#define __NR_sgetmask 68 -#define __NR_ssetmask 69 -#define __NR_setreuid 70 -#define __NR_setregid 71 -#define __NR_sigsuspend 72 -#define __NR_sigpending 73 -#define __NR_sethostname 74 -#define __NR_setrlimit 75 -#define __NR_getrlimit 76 /* Back compatible 2Gig limited rlimit */ -#define __NR_getrusage 77 -#define __NR_gettimeofday 78 -#define __NR_settimeofday 79 -#define __NR_getgroups 80 -#define __NR_setgroups 81 -#define __NR_select 82 -#define __NR_symlink 83 -#define __NR_oldlstat 84 -#define __NR_readlink 85 -#define __NR_uselib 86 -#define __NR_swapon 87 -#define __NR_reboot 88 -#define __NR_readdir 89 -#define __NR_mmap 90 -#define __NR_munmap 91 -#define __NR_truncate 92 -#define __NR_ftruncate 93 -#define __NR_fchmod 94 -#define __NR_fchown 95 -#define __NR_getpriority 96 -#define __NR_setpriority 97 -#define __NR_profil 98 -#define __NR_statfs 99 -#define __NR_fstatfs 100 -#define __NR_ioperm 101 -#define __NR_socketcall 102 -#define __NR_syslog 103 -#define __NR_setitimer 104 -#define __NR_getitimer 105 -#define __NR_stat 106 -#define __NR_lstat 107 -#define __NR_fstat 108 -#define __NR_olduname 109 -#define __NR_iopl 110 -#define __NR_vhangup 111 -#define __NR_idle 112 -#define __NR_vm86old 113 -#define __NR_wait4 114 -#define __NR_swapoff 115 -#define __NR_sysinfo 116 -#define __NR_ipc 117 -#define __NR_fsync 118 -#define __NR_sigreturn 119 -#define __NR_clone 120 -#define __NR_setdomainname 121 -#define __NR_uname 122 -#define __NR_modify_ldt 123 -#define __NR_adjtimex 124 -#define __NR_mprotect 125 -#define __NR_sigprocmask 126 -#define __NR_create_module 127 -#define __NR_init_module 128 -#define __NR_delete_module 129 -#define __NR_get_kernel_syms 130 -#define __NR_quotactl 131 -#define __NR_getpgid 132 -#define __NR_fchdir 133 -#define __NR_bdflush 134 -#define __NR_sysfs 135 -#define __NR_personality 136 -#define __NR_afs_syscall 137 /* Syscall for Andrew File System */ -#define __NR_setfsuid 138 -#define __NR_setfsgid 139 -#define __NR__llseek 140 -#define __NR_getdents 141 -#define __NR__newselect 142 -#define __NR_flock 143 -#define __NR_msync 144 -#define __NR_readv 145 -#define __NR_writev 146 -#define __NR_getsid 147 -#define __NR_fdatasync 148 -#define __NR__sysctl 149 -#define __NR_mlock 150 -#define __NR_munlock 151 -#define __NR_mlockall 152 -#define __NR_munlockall 153 -#define __NR_sched_setparam 154 -#define __NR_sched_getparam 155 -#define __NR_sched_setscheduler 156 -#define __NR_sched_getscheduler 157 -#define __NR_sched_yield 158 -#define __NR_sched_get_priority_max 159 -#define __NR_sched_get_priority_min 160 -#define __NR_sched_rr_get_interval 161 -#define __NR_nanosleep 162 -#define __NR_mremap 163 -#define __NR_setresuid 164 -#define __NR_getresuid 165 -#define __NR_vm86 166 -#define __NR_query_module 167 -#define __NR_poll 168 -#define __NR_nfsservctl 169 -#define __NR_setresgid 170 -#define __NR_getresgid 171 -#define __NR_prctl 172 -#define __NR_rt_sigreturn 173 -#define __NR_rt_sigaction 174 -#define __NR_rt_sigprocmask 175 -#define __NR_rt_sigpending 176 -#define __NR_rt_sigtimedwait 177 -#define __NR_rt_sigqueueinfo 178 -#define __NR_rt_sigsuspend 179 -#define __NR_pread64 180 -#define __NR_pwrite64 181 -#define __NR_chown 182 -#define __NR_getcwd 183 -#define __NR_capget 184 -#define __NR_capset 185 -#define __NR_sigaltstack 186 -#define __NR_sendfile 187 -#define __NR_getpmsg 188 /* some people actually want streams */ -#define __NR_putpmsg 189 /* some people actually want streams */ -#define __NR_vfork 190 -#define __NR_ugetrlimit 191 /* SuS compliant getrlimit */ -#define __NR_mmap2 192 -#define __NR_truncate64 193 -#define __NR_ftruncate64 194 -#define __NR_stat64 195 -#define __NR_lstat64 196 -#define __NR_fstat64 197 -#define __NR_lchown32 198 -#define __NR_getuid32 199 -#define __NR_getgid32 200 -#define __NR_geteuid32 201 -#define __NR_getegid32 202 -#define __NR_setreuid32 203 -#define __NR_setregid32 204 -#define __NR_getgroups32 205 -#define __NR_setgroups32 206 -#define __NR_fchown32 207 -#define __NR_setresuid32 208 -#define __NR_getresuid32 209 -#define __NR_setresgid32 210 -#define __NR_getresgid32 211 -#define __NR_chown32 212 -#define __NR_setuid32 213 -#define __NR_setgid32 214 -#define __NR_setfsuid32 215 -#define __NR_setfsgid32 216 -#define __NR_pivot_root 217 -#define __NR_mincore 218 -#define __NR_madvise 219 -#define __NR_madvise1 219 /* delete when C lib stub is removed */ -#define __NR_getdents64 220 -#define __NR_fcntl64 221 -/* 223 is unused */ -#define __NR_gettid 224 -#define __NR_readahead 225 -#define __NR_setxattr 226 -#define __NR_lsetxattr 227 -#define __NR_fsetxattr 228 -#define __NR_getxattr 229 -#define __NR_lgetxattr 230 -#define __NR_fgetxattr 231 -#define __NR_listxattr 232 -#define __NR_llistxattr 233 -#define __NR_flistxattr 234 -#define __NR_removexattr 235 -#define __NR_lremovexattr 236 -#define __NR_fremovexattr 237 -#define __NR_tkill 238 -#define __NR_sendfile64 239 -#define __NR_futex 240 -#define __NR_sched_setaffinity 241 -#define __NR_sched_getaffinity 242 -#define __NR_set_thread_area 243 -#define __NR_get_thread_area 244 -#define __NR_io_setup 245 -#define __NR_io_destroy 246 -#define __NR_io_getevents 247 -#define __NR_io_submit 248 -#define __NR_io_cancel 249 -#define __NR_fadvise64 250 +#include <uapi/asm/unistd.h> -#define __NR_exit_group 252 -#define __NR_lookup_dcookie 253 -#define __NR_epoll_create 254 -#define __NR_epoll_ctl 255 -#define __NR_epoll_wait 256 -#define __NR_remap_file_pages 257 -#define __NR_set_tid_address 258 -#define __NR_timer_create 259 -#define __NR_timer_settime (__NR_timer_create+1) -#define __NR_timer_gettime (__NR_timer_create+2) -#define __NR_timer_getoverrun (__NR_timer_create+3) -#define __NR_timer_delete (__NR_timer_create+4) -#define __NR_clock_settime (__NR_timer_create+5) -#define __NR_clock_gettime (__NR_timer_create+6) -#define __NR_clock_getres (__NR_timer_create+7) -#define __NR_clock_nanosleep (__NR_timer_create+8) -#define __NR_statfs64 268 -#define __NR_fstatfs64 269 -#define __NR_tgkill 270 -#define __NR_utimes 271 -#define __NR_fadvise64_64 272 -#define __NR_vserver 273 -#define __NR_mbind 274 -#define __NR_get_mempolicy 275 -#define __NR_set_mempolicy 276 -#define __NR_mq_open 277 -#define __NR_mq_unlink (__NR_mq_open+1) -#define __NR_mq_timedsend (__NR_mq_open+2) -#define __NR_mq_timedreceive (__NR_mq_open+3) -#define __NR_mq_notify (__NR_mq_open+4) -#define __NR_mq_getsetattr (__NR_mq_open+5) -#define __NR_kexec_load 283 -#define __NR_waitid 284 -#define __NR_add_key 286 -#define __NR_request_key 287 -#define __NR_keyctl 288 -#define __NR_cacheflush 289 -#define __NR_ioprio_set 290 -#define __NR_ioprio_get 291 -#define __NR_inotify_init 292 -#define __NR_inotify_add_watch 293 -#define __NR_inotify_rm_watch 294 -#define __NR_migrate_pages 295 -#define __NR_openat 296 -#define __NR_mkdirat 297 -#define __NR_mknodat 298 -#define __NR_fchownat 299 -#define __NR_futimesat 300 -#define __NR_fstatat64 301 -#define __NR_unlinkat 302 -#define __NR_renameat 303 -#define __NR_linkat 304 -#define __NR_symlinkat 305 -#define __NR_readlinkat 306 -#define __NR_fchmodat 307 -#define __NR_faccessat 308 -#define __NR_pselect6 309 -#define __NR_ppoll 310 -#define __NR_unshare 311 -#define __NR_set_robust_list 312 -#define __NR_get_robust_list 313 -#define __NR_splice 314 -#define __NR_sync_file_range 315 -#define __NR_tee 316 -#define __NR_vmsplice 317 -#define __NR_move_pages 318 -#define __NR_getcpu 319 -#define __NR_epoll_pwait 320 -#define __NR_utimensat 321 -#define __NR_signalfd 322 -#define __NR_timerfd_create 323 -#define __NR_eventfd 324 -#define __NR_fallocate 325 -#define __NR_timerfd_settime 326 -#define __NR_timerfd_gettime 327 -#define __NR_signalfd4 328 -#define __NR_eventfd2 329 -#define __NR_epoll_create1 330 -#define __NR_dup3 331 -#define __NR_pipe2 332 -#define __NR_inotify_init1 333 -#define __NR_preadv 334 -#define __NR_pwritev 335 -#define __NR_rt_tgsigqueueinfo 336 -#define __NR_perf_event_open 337 -#define __NR_recvmmsg 338 -#ifdef __KERNEL__ - -#define NR_syscalls 339 +#define NR_syscalls 340 /* * specify the deprecated syscalls we want to support on this arch */ -#define __ARCH_WANT_IPC_PARSE_VERSION #define __ARCH_WANT_OLD_READDIR #define __ARCH_WANT_OLD_STAT #define __ARCH_WANT_STAT64 @@ -365,7 +26,6 @@ #define __ARCH_WANT_SYS_GETHOSTNAME #define __ARCH_WANT_SYS_IPC #define __ARCH_WANT_SYS_PAUSE -#define __ARCH_WANT_SYS_SGETMASK #define __ARCH_WANT_SYS_SIGNAL #define __ARCH_WANT_SYS_TIME #define __ARCH_WANT_SYS_UTIME @@ -380,18 +40,8 @@ #define __ARCH_WANT_SYS_OLDUMOUNT #define __ARCH_WANT_SYS_SIGPENDING #define __ARCH_WANT_SYS_SIGPROCMASK -#define __ARCH_WANT_SYS_RT_SIGACTION -#define __ARCH_WANT_SYS_RT_SIGSUSPEND - -/* - * "Conditional" syscalls - * - * What we want is __attribute__((weak,alias("sys_ni_syscall"))), - * but it doesn't work on all toolchains, so we just do it by hand - */ -#ifndef cond_syscall -#define cond_syscall(x) asm(".weak\t" #x "\n\t.set\t" #x ",sys_ni_syscall"); -#endif +#define __ARCH_WANT_SYS_FORK +#define __ARCH_WANT_SYS_VFORK +#define __ARCH_WANT_SYS_CLONE -#endif /* __KERNEL__ */ #endif /* _ASM_UNISTD_H */ diff --git a/arch/mn10300/include/uapi/asm/Kbuild b/arch/mn10300/include/uapi/asm/Kbuild new file mode 100644 index 00000000000..040178cdb3e --- /dev/null +++ b/arch/mn10300/include/uapi/asm/Kbuild @@ -0,0 +1,34 @@ +# UAPI Header export list +include include/uapi/asm-generic/Kbuild.asm + +header-y += auxvec.h +header-y += bitsperlong.h +header-y += byteorder.h +header-y += errno.h +header-y += fcntl.h +header-y += ioctl.h +header-y += ioctls.h +header-y += ipcbuf.h +header-y += kvm_para.h +header-y += mman.h +header-y += msgbuf.h +header-y += param.h +header-y += poll.h +header-y += posix_types.h +header-y += ptrace.h +header-y += resource.h +header-y += sembuf.h +header-y += setup.h +header-y += shmbuf.h +header-y += sigcontext.h +header-y += siginfo.h +header-y += signal.h +header-y += socket.h +header-y += sockios.h +header-y += stat.h +header-y += statfs.h +header-y += swab.h +header-y += termbits.h +header-y += termios.h +header-y += types.h +header-y += unistd.h diff --git a/arch/mn10300/include/asm/auxvec.h b/arch/mn10300/include/uapi/asm/auxvec.h index 4fdb60b2ae3..4fdb60b2ae3 100644 --- a/arch/mn10300/include/asm/auxvec.h +++ b/arch/mn10300/include/uapi/asm/auxvec.h diff --git a/arch/mn10300/include/asm/bitsperlong.h b/arch/mn10300/include/uapi/asm/bitsperlong.h index 6dc0bb0c13b..6dc0bb0c13b 100644 --- a/arch/mn10300/include/asm/bitsperlong.h +++ b/arch/mn10300/include/uapi/asm/bitsperlong.h diff --git a/arch/mn10300/include/asm/byteorder.h b/arch/mn10300/include/uapi/asm/byteorder.h index 5dd0bdd9fee..5dd0bdd9fee 100644 --- a/arch/mn10300/include/asm/byteorder.h +++ b/arch/mn10300/include/uapi/asm/byteorder.h diff --git a/arch/mn10300/include/asm/errno.h b/arch/mn10300/include/uapi/asm/errno.h index 4c82b503d92..4c82b503d92 100644 --- a/arch/mn10300/include/asm/errno.h +++ b/arch/mn10300/include/uapi/asm/errno.h diff --git a/arch/mn10300/include/asm/fcntl.h b/arch/mn10300/include/uapi/asm/fcntl.h index 46ab12db573..46ab12db573 100644 --- a/arch/mn10300/include/asm/fcntl.h +++ b/arch/mn10300/include/uapi/asm/fcntl.h diff --git a/arch/mn10300/include/asm/ioctl.h b/arch/mn10300/include/uapi/asm/ioctl.h index b279fe06dfe..b279fe06dfe 100644 --- a/arch/mn10300/include/asm/ioctl.h +++ b/arch/mn10300/include/uapi/asm/ioctl.h diff --git a/arch/mn10300/include/asm/ioctls.h b/arch/mn10300/include/uapi/asm/ioctls.h index 0212f4b2255..0212f4b2255 100644 --- a/arch/mn10300/include/asm/ioctls.h +++ b/arch/mn10300/include/uapi/asm/ioctls.h diff --git a/arch/mn10300/include/uapi/asm/ipcbuf.h b/arch/mn10300/include/uapi/asm/ipcbuf.h new file mode 100644 index 00000000000..84c7e51cb6d --- /dev/null +++ b/arch/mn10300/include/uapi/asm/ipcbuf.h @@ -0,0 +1 @@ +#include <asm-generic/ipcbuf.h> diff --git a/arch/mn10300/include/uapi/asm/kvm_para.h b/arch/mn10300/include/uapi/asm/kvm_para.h new file mode 100644 index 00000000000..14fab8f0b95 --- /dev/null +++ b/arch/mn10300/include/uapi/asm/kvm_para.h @@ -0,0 +1 @@ +#include <asm-generic/kvm_para.h> diff --git a/arch/mn10300/include/asm/mman.h b/arch/mn10300/include/uapi/asm/mman.h index db5c53da73c..db5c53da73c 100644 --- a/arch/mn10300/include/asm/mman.h +++ b/arch/mn10300/include/uapi/asm/mman.h diff --git a/arch/mn10300/include/asm/msgbuf.h b/arch/mn10300/include/uapi/asm/msgbuf.h index 8b602450cc4..8b602450cc4 100644 --- a/arch/mn10300/include/asm/msgbuf.h +++ b/arch/mn10300/include/uapi/asm/msgbuf.h diff --git a/arch/mn10300/include/asm/param.h b/arch/mn10300/include/uapi/asm/param.h index 789b1df41fc..02a0ca6f13c 100644 --- a/arch/mn10300/include/asm/param.h +++ b/arch/mn10300/include/uapi/asm/param.h @@ -11,24 +11,8 @@ #ifndef _ASM_PARAM_H #define _ASM_PARAM_H -#ifdef __KERNEL__ -#define HZ CONFIG_HZ /* Internal kernel timer frequency */ -#define USER_HZ 100 /* .. some user interfaces are in - * "ticks" */ -#define CLOCKS_PER_SEC (USER_HZ) /* like times() */ -#endif +#include <asm-generic/param.h> -#ifndef HZ -#define HZ 100 -#endif - -#define EXEC_PAGESIZE 4096 - -#ifndef NOGROUP -#define NOGROUP (-1) -#endif - -#define MAXHOSTNAMELEN 64 /* max length of hostname */ #define COMMAND_LINE_SIZE 256 #endif /* _ASM_PARAM_H */ diff --git a/arch/mn10300/include/asm/poll.h b/arch/mn10300/include/uapi/asm/poll.h index c98509d3149..c98509d3149 100644 --- a/arch/mn10300/include/asm/poll.h +++ b/arch/mn10300/include/uapi/asm/poll.h diff --git a/arch/mn10300/include/uapi/asm/posix_types.h b/arch/mn10300/include/uapi/asm/posix_types.h new file mode 100644 index 00000000000..d31eeea480c --- /dev/null +++ b/arch/mn10300/include/uapi/asm/posix_types.h @@ -0,0 +1,45 @@ +/* MN10300 POSIX types + * + * Copyright (C) 2007 Matsushita Electric Industrial Co., Ltd. + * Copyright (C) 2007 Red Hat, Inc. All Rights Reserved. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public Licence + * as published by the Free Software Foundation; either version + * 2 of the Licence, or (at your option) any later version. + */ +#ifndef _ASM_POSIX_TYPES_H +#define _ASM_POSIX_TYPES_H + +/* + * This file is generally used by user-level software, so you need to + * be a little careful about namespace pollution etc. Also, we cannot + * assume GCC is being used. + */ + +typedef unsigned short __kernel_mode_t; +#define __kernel_mode_t __kernel_mode_t + +typedef unsigned short __kernel_ipc_pid_t; +#define __kernel_ipc_pid_t __kernel_ipc_pid_t + +typedef unsigned short __kernel_uid_t; +typedef unsigned short __kernel_gid_t; +#define __kernel_uid_t __kernel_uid_t + +#if __GNUC__ == 4 +typedef unsigned int __kernel_size_t; +typedef signed int __kernel_ssize_t; +#else +typedef unsigned long __kernel_size_t; +typedef signed long __kernel_ssize_t; +#endif +typedef int __kernel_ptrdiff_t; +#define __kernel_size_t __kernel_size_t + +typedef unsigned short __kernel_old_dev_t; +#define __kernel_old_dev_t __kernel_old_dev_t + +#include <asm-generic/posix_types.h> + +#endif /* _ASM_POSIX_TYPES_H */ diff --git a/arch/mn10300/include/uapi/asm/ptrace.h b/arch/mn10300/include/uapi/asm/ptrace.h new file mode 100644 index 00000000000..71b2251b7bf --- /dev/null +++ b/arch/mn10300/include/uapi/asm/ptrace.h @@ -0,0 +1,84 @@ +/* MN10300 Exception frame layout and ptrace constants + * + * Copyright (C) 2007 Red Hat, Inc. All Rights Reserved. + * Written by David Howells (dhowells@redhat.com) + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public Licence + * as published by the Free Software Foundation; either version + * 2 of the Licence, or (at your option) any later version. + */ +#ifndef _UAPI_ASM_PTRACE_H +#define _UAPI_ASM_PTRACE_H + +#define PT_A3 0 +#define PT_A2 1 +#define PT_D3 2 +#define PT_D2 3 +#define PT_MCVF 4 +#define PT_MCRL 5 +#define PT_MCRH 6 +#define PT_MDRQ 7 +#define PT_E1 8 +#define PT_E0 9 +#define PT_E7 10 +#define PT_E6 11 +#define PT_E5 12 +#define PT_E4 13 +#define PT_E3 14 +#define PT_E2 15 +#define PT_SP 16 +#define PT_LAR 17 +#define PT_LIR 18 +#define PT_MDR 19 +#define PT_A1 20 +#define PT_A0 21 +#define PT_D1 22 +#define PT_D0 23 +#define PT_ORIG_D0 24 +#define PT_EPSW 25 +#define PT_PC 26 +#define NR_PTREGS 27 + +/* + * This defines the way registers are stored in the event of an exception + * - the strange order is due to the MOVM instruction + */ +struct pt_regs { + unsigned long a3; /* syscall arg 3 */ + unsigned long a2; /* syscall arg 4 */ + unsigned long d3; /* syscall arg 5 */ + unsigned long d2; /* syscall arg 6 */ + unsigned long mcvf; + unsigned long mcrl; + unsigned long mcrh; + unsigned long mdrq; + unsigned long e1; + unsigned long e0; + unsigned long e7; + unsigned long e6; + unsigned long e5; + unsigned long e4; + unsigned long e3; + unsigned long e2; + unsigned long sp; + unsigned long lar; + unsigned long lir; + unsigned long mdr; + unsigned long a1; + unsigned long a0; /* syscall arg 1 */ + unsigned long d1; /* syscall arg 2 */ + unsigned long d0; /* syscall ret */ + struct pt_regs *next; /* next frame pointer */ + unsigned long orig_d0; /* syscall number */ + unsigned long epsw; + unsigned long pc; +}; + +/* Arbitrarily choose the same ptrace numbers as used by the Sparc code. */ +#define PTRACE_GETREGS 12 +#define PTRACE_SETREGS 13 +#define PTRACE_GETFPREGS 14 +#define PTRACE_SETFPREGS 15 + +#endif /* _UAPI_ASM_PTRACE_H */ diff --git a/arch/mn10300/include/asm/resource.h b/arch/mn10300/include/uapi/asm/resource.h index 04bc4db8921..04bc4db8921 100644 --- a/arch/mn10300/include/asm/resource.h +++ b/arch/mn10300/include/uapi/asm/resource.h diff --git a/arch/mn10300/include/asm/sembuf.h b/arch/mn10300/include/uapi/asm/sembuf.h index 301f3f9d8aa..301f3f9d8aa 100644 --- a/arch/mn10300/include/asm/sembuf.h +++ b/arch/mn10300/include/uapi/asm/sembuf.h diff --git a/arch/mn10300/include/uapi/asm/setup.h b/arch/mn10300/include/uapi/asm/setup.h new file mode 100644 index 00000000000..ae5704fa77a --- /dev/null +++ b/arch/mn10300/include/uapi/asm/setup.h @@ -0,0 +1,4 @@ +/* + * There isn't anything here anymore, but the file must not be empty or patch + * will delete it. + */ diff --git a/arch/mn10300/include/asm/shmbuf.h b/arch/mn10300/include/uapi/asm/shmbuf.h index 8f300cc35d6..8f300cc35d6 100644 --- a/arch/mn10300/include/asm/shmbuf.h +++ b/arch/mn10300/include/uapi/asm/shmbuf.h diff --git a/arch/mn10300/include/asm/sigcontext.h b/arch/mn10300/include/uapi/asm/sigcontext.h index 4de3afff4ad..4de3afff4ad 100644 --- a/arch/mn10300/include/asm/sigcontext.h +++ b/arch/mn10300/include/uapi/asm/sigcontext.h diff --git a/arch/mn10300/include/asm/siginfo.h b/arch/mn10300/include/uapi/asm/siginfo.h index 0815d29d82e..0815d29d82e 100644 --- a/arch/mn10300/include/asm/siginfo.h +++ b/arch/mn10300/include/uapi/asm/siginfo.h diff --git a/arch/mn10300/include/uapi/asm/signal.h b/arch/mn10300/include/uapi/asm/signal.h new file mode 100644 index 00000000000..f423a08d7ee --- /dev/null +++ b/arch/mn10300/include/uapi/asm/signal.h @@ -0,0 +1,125 @@ +/* MN10300 Signal definitions + * + * Copyright (C) 2007 Matsushita Electric Industrial Co., Ltd. + * Copyright (C) 2007 Red Hat, Inc. All Rights Reserved. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public Licence + * as published by the Free Software Foundation; either version + * 2 of the Licence, or (at your option) any later version. + */ +#ifndef _UAPI_ASM_SIGNAL_H +#define _UAPI_ASM_SIGNAL_H + +#include <linux/types.h> + +/* Avoid too many header ordering problems. */ +struct siginfo; + +#ifndef __KERNEL__ +/* Here we must cater to libcs that poke about in kernel headers. */ + +#define NSIG 32 +typedef unsigned long sigset_t; + +#endif /* __KERNEL__ */ + +#define SIGHUP 1 +#define SIGINT 2 +#define SIGQUIT 3 +#define SIGILL 4 +#define SIGTRAP 5 +#define SIGABRT 6 +#define SIGIOT 6 +#define SIGBUS 7 +#define SIGFPE 8 +#define SIGKILL 9 +#define SIGUSR1 10 +#define SIGSEGV 11 +#define SIGUSR2 12 +#define SIGPIPE 13 +#define SIGALRM 14 +#define SIGTERM 15 +#define SIGSTKFLT 16 +#define SIGCHLD 17 +#define SIGCONT 18 +#define SIGSTOP 19 +#define SIGTSTP 20 +#define SIGTTIN 21 +#define SIGTTOU 22 +#define SIGURG 23 +#define SIGXCPU 24 +#define SIGXFSZ 25 +#define SIGVTALRM 26 +#define SIGPROF 27 +#define SIGWINCH 28 +#define SIGIO 29 +#define SIGPOLL SIGIO +/* +#define SIGLOST 29 +*/ +#define SIGPWR 30 +#define SIGSYS 31 +#define SIGUNUSED 31 + +/* These should not be considered constants from userland. */ +#define SIGRTMIN 32 +#define SIGRTMAX _NSIG + +/* + * SA_FLAGS values: + * + * SA_ONSTACK indicates that a registered stack_t will be used. + * SA_RESTART flag to get restarting signals (which were the default long ago) + * SA_NOCLDSTOP flag to turn off SIGCHLD when children stop. + * SA_RESETHAND clears the handler when the signal is delivered. + * SA_NOCLDWAIT flag on SIGCHLD to inhibit zombies. + * SA_NODEFER prevents the current signal from being masked in the handler. + * + * SA_ONESHOT and SA_NOMASK are the historical Linux names for the Single + * Unix names RESETHAND and NODEFER respectively. + */ +#define SA_NOCLDSTOP 0x00000001U +#define SA_NOCLDWAIT 0x00000002U +#define SA_SIGINFO 0x00000004U +#define SA_ONSTACK 0x08000000U +#define SA_RESTART 0x10000000U +#define SA_NODEFER 0x40000000U +#define SA_RESETHAND 0x80000000U + +#define SA_NOMASK SA_NODEFER +#define SA_ONESHOT SA_RESETHAND + +#define SA_RESTORER 0x04000000 + +#define MINSIGSTKSZ 2048 +#define SIGSTKSZ 8192 + +#include <asm-generic/signal-defs.h> + +#ifndef __KERNEL__ +/* Here we must cater to libcs that poke about in kernel headers. */ + +struct sigaction { + union { + __sighandler_t _sa_handler; + void (*_sa_sigaction)(int, struct siginfo *, void *); + } _u; + sigset_t sa_mask; + unsigned long sa_flags; + void (*sa_restorer)(void); +}; + +#define sa_handler _u._sa_handler +#define sa_sigaction _u._sa_sigaction + +#endif /* __KERNEL__ */ + +typedef struct sigaltstack { + void __user *ss_sp; + int ss_flags; + size_t ss_size; +} stack_t; + + +#endif /* _UAPI_ASM_SIGNAL_H */ diff --git a/arch/mn10300/include/asm/socket.h b/arch/mn10300/include/uapi/asm/socket.h index 4e60c428128..6aa3ce1854a 100644 --- a/arch/mn10300/include/asm/socket.h +++ b/arch/mn10300/include/uapi/asm/socket.h @@ -22,7 +22,7 @@ #define SO_PRIORITY 12 #define SO_LINGER 13 #define SO_BSDCOMPAT 14 -/* To add :#define SO_REUSEPORT 15 */ +#define SO_REUSEPORT 15 #define SO_PASSCRED 16 #define SO_PEERCRED 17 #define SO_RCVLOWAT 18 @@ -40,6 +40,7 @@ /* Socket filtering */ #define SO_ATTACH_FILTER 26 #define SO_DETACH_FILTER 27 +#define SO_GET_FILTER SO_ATTACH_FILTER #define SO_PEERNAME 28 #define SO_TIMESTAMP 29 @@ -62,4 +63,21 @@ #define SO_RXQ_OVFL 40 +#define SO_WIFI_STATUS 41 +#define SCM_WIFI_STATUS SO_WIFI_STATUS +#define SO_PEEK_OFF 42 + +/* Instruct lower device to use last 4-bytes of skb data as FCS */ +#define SO_NOFCS 43 + +#define SO_LOCK_FILTER 44 + +#define SO_SELECT_ERR_QUEUE 45 + +#define SO_BUSY_POLL 46 + +#define SO_MAX_PACING_RATE 47 + +#define SO_BPF_EXTENSIONS 48 + #endif /* _ASM_SOCKET_H */ diff --git a/arch/mn10300/include/asm/sockios.h b/arch/mn10300/include/uapi/asm/sockios.h index b03043a1c56..b03043a1c56 100644 --- a/arch/mn10300/include/asm/sockios.h +++ b/arch/mn10300/include/uapi/asm/sockios.h diff --git a/arch/mn10300/include/asm/stat.h b/arch/mn10300/include/uapi/asm/stat.h index 63ff8371cf2..63ff8371cf2 100644 --- a/arch/mn10300/include/asm/stat.h +++ b/arch/mn10300/include/uapi/asm/stat.h diff --git a/arch/mn10300/include/asm/statfs.h b/arch/mn10300/include/uapi/asm/statfs.h index 0b91fe198c2..0b91fe198c2 100644 --- a/arch/mn10300/include/asm/statfs.h +++ b/arch/mn10300/include/uapi/asm/statfs.h diff --git a/arch/mn10300/include/asm/swab.h b/arch/mn10300/include/uapi/asm/swab.h index bd818a820ca..bd818a820ca 100644 --- a/arch/mn10300/include/asm/swab.h +++ b/arch/mn10300/include/uapi/asm/swab.h diff --git a/arch/mn10300/include/asm/termbits.h b/arch/mn10300/include/uapi/asm/termbits.h index 130d4249597..130d4249597 100644 --- a/arch/mn10300/include/asm/termbits.h +++ b/arch/mn10300/include/uapi/asm/termbits.h diff --git a/arch/mn10300/include/uapi/asm/termios.h b/arch/mn10300/include/uapi/asm/termios.h new file mode 100644 index 00000000000..11d3cc9d316 --- /dev/null +++ b/arch/mn10300/include/uapi/asm/termios.h @@ -0,0 +1,83 @@ +#ifndef _UAPI_ASM_TERMIOS_H +#define _UAPI_ASM_TERMIOS_H + +#include <asm/termbits.h> +#include <asm/ioctls.h> + +struct winsize { + unsigned short ws_row; + unsigned short ws_col; + unsigned short ws_xpixel; + unsigned short ws_ypixel; +}; + +#define NCC 8 +struct termio { + unsigned short c_iflag; /* input mode flags */ + unsigned short c_oflag; /* output mode flags */ + unsigned short c_cflag; /* control mode flags */ + unsigned short c_lflag; /* local mode flags */ + unsigned char c_line; /* line discipline */ + unsigned char c_cc[NCC]; /* control characters */ +}; + + +/* modem lines */ +#define TIOCM_LE 0x001 +#define TIOCM_DTR 0x002 +#define TIOCM_RTS 0x004 +#define TIOCM_ST 0x008 +#define TIOCM_SR 0x010 +#define TIOCM_CTS 0x020 +#define TIOCM_CAR 0x040 +#define TIOCM_RNG 0x080 +#define TIOCM_DSR 0x100 +#define TIOCM_CD TIOCM_CAR +#define TIOCM_RI TIOCM_RNG +#define TIOCM_OUT1 0x2000 +#define TIOCM_OUT2 0x4000 +#define TIOCM_LOOP 0x8000 + +#define TIOCM_MODEM_BITS TIOCM_OUT2 /* IRDA support */ + +/* + * Translate a "termio" structure into a "termios". Ugh. + */ +#define SET_LOW_TERMIOS_BITS(termios, termio, x) { \ + unsigned short __tmp; \ + get_user(__tmp, &(termio)->x); \ + *(unsigned short *) &(termios)->x = __tmp; \ +} + +#define user_termio_to_kernel_termios(termios, termio) \ +({ \ + SET_LOW_TERMIOS_BITS(termios, termio, c_iflag); \ + SET_LOW_TERMIOS_BITS(termios, termio, c_oflag); \ + SET_LOW_TERMIOS_BITS(termios, termio, c_cflag); \ + SET_LOW_TERMIOS_BITS(termios, termio, c_lflag); \ + copy_from_user((termios)->c_cc, (termio)->c_cc, NCC); \ +}) + +/* + * Translate a "termios" structure into a "termio". Ugh. + */ +#define kernel_termios_to_user_termio(termio, termios) \ +({ \ + put_user((termios)->c_iflag, &(termio)->c_iflag); \ + put_user((termios)->c_oflag, &(termio)->c_oflag); \ + put_user((termios)->c_cflag, &(termio)->c_cflag); \ + put_user((termios)->c_lflag, &(termio)->c_lflag); \ + put_user((termios)->c_line, &(termio)->c_line); \ + copy_to_user((termio)->c_cc, (termios)->c_cc, NCC); \ +}) + +#define user_termios_to_kernel_termios(k, u) \ + copy_from_user(k, u, sizeof(struct termios2)) +#define kernel_termios_to_user_termios(u, k) \ + copy_to_user(u, k, sizeof(struct termios2)) +#define user_termios_to_kernel_termios_1(k, u) \ + copy_from_user(k, u, sizeof(struct termios)) +#define kernel_termios_to_user_termios_1(u, k) \ + copy_to_user(u, k, sizeof(struct termios)) + +#endif /* _UAPI_ASM_TERMIOS_H */ diff --git a/arch/mn10300/include/uapi/asm/types.h b/arch/mn10300/include/uapi/asm/types.h new file mode 100644 index 00000000000..8b3f0501b9b --- /dev/null +++ b/arch/mn10300/include/uapi/asm/types.h @@ -0,0 +1,11 @@ +/* MN10300 Basic type definitions + * + * Copyright (C) 2007 Matsushita Electric Industrial Co., Ltd. + * Copyright (C) 2007 Red Hat, Inc. All Rights Reserved. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public Licence + * as published by the Free Software Foundation; either version + * 2 of the Licence, or (at your option) any later version. + */ +#include <asm-generic/int-ll64.h> diff --git a/arch/mn10300/include/uapi/asm/unistd.h b/arch/mn10300/include/uapi/asm/unistd.h new file mode 100644 index 00000000000..e28ac3f4247 --- /dev/null +++ b/arch/mn10300/include/uapi/asm/unistd.h @@ -0,0 +1,354 @@ +/* MN10300 System call number list + * + * Copyright (C) 2007 Red Hat, Inc. All Rights Reserved. + * Written by David Howells (dhowells@redhat.com) + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public Licence + * as published by the Free Software Foundation; either version + * 2 of the Licence, or (at your option) any later version. + */ +#ifndef _UAPI_ASM_UNISTD_H +#define _UAPI_ASM_UNISTD_H + +#define __NR_restart_syscall 0 +#define __NR_exit 1 +#define __NR_fork 2 +#define __NR_read 3 +#define __NR_write 4 +#define __NR_open 5 +#define __NR_close 6 +#define __NR_waitpid 7 +#define __NR_creat 8 +#define __NR_link 9 +#define __NR_unlink 10 +#define __NR_execve 11 +#define __NR_chdir 12 +#define __NR_time 13 +#define __NR_mknod 14 +#define __NR_chmod 15 +#define __NR_lchown 16 +#define __NR_break 17 +#define __NR_oldstat 18 +#define __NR_lseek 19 +#define __NR_getpid 20 +#define __NR_mount 21 +#define __NR_umount 22 +#define __NR_setuid 23 +#define __NR_getuid 24 +#define __NR_stime 25 +#define __NR_ptrace 26 +#define __NR_alarm 27 +#define __NR_oldfstat 28 +#define __NR_pause 29 +#define __NR_utime 30 +#define __NR_stty 31 +#define __NR_gtty 32 +#define __NR_access 33 +#define __NR_nice 34 +#define __NR_ftime 35 +#define __NR_sync 36 +#define __NR_kill 37 +#define __NR_rename 38 +#define __NR_mkdir 39 +#define __NR_rmdir 40 +#define __NR_dup 41 +#define __NR_pipe 42 +#define __NR_times 43 +#define __NR_prof 44 +#define __NR_brk 45 +#define __NR_setgid 46 +#define __NR_getgid 47 +#define __NR_signal 48 +#define __NR_geteuid 49 +#define __NR_getegid 50 +#define __NR_acct 51 +#define __NR_umount2 52 +#define __NR_lock 53 +#define __NR_ioctl 54 +#define __NR_fcntl 55 +#define __NR_mpx 56 +#define __NR_setpgid 57 +#define __NR_ulimit 58 +#define __NR_oldolduname 59 +#define __NR_umask 60 +#define __NR_chroot 61 +#define __NR_ustat 62 +#define __NR_dup2 63 +#define __NR_getppid 64 +#define __NR_getpgrp 65 +#define __NR_setsid 66 +#define __NR_sigaction 67 +#define __NR_sgetmask 68 +#define __NR_ssetmask 69 +#define __NR_setreuid 70 +#define __NR_setregid 71 +#define __NR_sigsuspend 72 +#define __NR_sigpending 73 +#define __NR_sethostname 74 +#define __NR_setrlimit 75 +#define __NR_getrlimit 76 /* Back compatible 2Gig limited rlimit */ +#define __NR_getrusage 77 +#define __NR_gettimeofday 78 +#define __NR_settimeofday 79 +#define __NR_getgroups 80 +#define __NR_setgroups 81 +#define __NR_select 82 +#define __NR_symlink 83 +#define __NR_oldlstat 84 +#define __NR_readlink 85 +#define __NR_uselib 86 +#define __NR_swapon 87 +#define __NR_reboot 88 +#define __NR_readdir 89 +#define __NR_mmap 90 +#define __NR_munmap 91 +#define __NR_truncate 92 +#define __NR_ftruncate 93 +#define __NR_fchmod 94 +#define __NR_fchown 95 +#define __NR_getpriority 96 +#define __NR_setpriority 97 +#define __NR_profil 98 +#define __NR_statfs 99 +#define __NR_fstatfs 100 +#define __NR_ioperm 101 +#define __NR_socketcall 102 +#define __NR_syslog 103 +#define __NR_setitimer 104 +#define __NR_getitimer 105 +#define __NR_stat 106 +#define __NR_lstat 107 +#define __NR_fstat 108 +#define __NR_olduname 109 +#define __NR_iopl 110 +#define __NR_vhangup 111 +#define __NR_idle 112 +#define __NR_vm86old 113 +#define __NR_wait4 114 +#define __NR_swapoff 115 +#define __NR_sysinfo 116 +#define __NR_ipc 117 +#define __NR_fsync 118 +#define __NR_sigreturn 119 +#define __NR_clone 120 +#define __NR_setdomainname 121 +#define __NR_uname 122 +#define __NR_modify_ldt 123 +#define __NR_adjtimex 124 +#define __NR_mprotect 125 +#define __NR_sigprocmask 126 +#define __NR_create_module 127 +#define __NR_init_module 128 +#define __NR_delete_module 129 +#define __NR_get_kernel_syms 130 +#define __NR_quotactl 131 +#define __NR_getpgid 132 +#define __NR_fchdir 133 +#define __NR_bdflush 134 +#define __NR_sysfs 135 +#define __NR_personality 136 +#define __NR_afs_syscall 137 /* Syscall for Andrew File System */ +#define __NR_setfsuid 138 +#define __NR_setfsgid 139 +#define __NR__llseek 140 +#define __NR_getdents 141 +#define __NR__newselect 142 +#define __NR_flock 143 +#define __NR_msync 144 +#define __NR_readv 145 +#define __NR_writev 146 +#define __NR_getsid 147 +#define __NR_fdatasync 148 +#define __NR__sysctl 149 +#define __NR_mlock 150 +#define __NR_munlock 151 +#define __NR_mlockall 152 +#define __NR_munlockall 153 +#define __NR_sched_setparam 154 +#define __NR_sched_getparam 155 +#define __NR_sched_setscheduler 156 +#define __NR_sched_getscheduler 157 +#define __NR_sched_yield 158 +#define __NR_sched_get_priority_max 159 +#define __NR_sched_get_priority_min 160 +#define __NR_sched_rr_get_interval 161 +#define __NR_nanosleep 162 +#define __NR_mremap 163 +#define __NR_setresuid 164 +#define __NR_getresuid 165 +#define __NR_vm86 166 +#define __NR_query_module 167 +#define __NR_poll 168 +#define __NR_nfsservctl 169 +#define __NR_setresgid 170 +#define __NR_getresgid 171 +#define __NR_prctl 172 +#define __NR_rt_sigreturn 173 +#define __NR_rt_sigaction 174 +#define __NR_rt_sigprocmask 175 +#define __NR_rt_sigpending 176 +#define __NR_rt_sigtimedwait 177 +#define __NR_rt_sigqueueinfo 178 +#define __NR_rt_sigsuspend 179 +#define __NR_pread64 180 +#define __NR_pwrite64 181 +#define __NR_chown 182 +#define __NR_getcwd 183 +#define __NR_capget 184 +#define __NR_capset 185 +#define __NR_sigaltstack 186 +#define __NR_sendfile 187 +#define __NR_getpmsg 188 /* some people actually want streams */ +#define __NR_putpmsg 189 /* some people actually want streams */ +#define __NR_vfork 190 +#define __NR_ugetrlimit 191 /* SuS compliant getrlimit */ +#define __NR_mmap2 192 +#define __NR_truncate64 193 +#define __NR_ftruncate64 194 +#define __NR_stat64 195 +#define __NR_lstat64 196 +#define __NR_fstat64 197 +#define __NR_lchown32 198 +#define __NR_getuid32 199 +#define __NR_getgid32 200 +#define __NR_geteuid32 201 +#define __NR_getegid32 202 +#define __NR_setreuid32 203 +#define __NR_setregid32 204 +#define __NR_getgroups32 205 +#define __NR_setgroups32 206 +#define __NR_fchown32 207 +#define __NR_setresuid32 208 +#define __NR_getresuid32 209 +#define __NR_setresgid32 210 +#define __NR_getresgid32 211 +#define __NR_chown32 212 +#define __NR_setuid32 213 +#define __NR_setgid32 214 +#define __NR_setfsuid32 215 +#define __NR_setfsgid32 216 +#define __NR_pivot_root 217 +#define __NR_mincore 218 +#define __NR_madvise 219 +#define __NR_madvise1 219 /* delete when C lib stub is removed */ +#define __NR_getdents64 220 +#define __NR_fcntl64 221 +/* 223 is unused */ +#define __NR_gettid 224 +#define __NR_readahead 225 +#define __NR_setxattr 226 +#define __NR_lsetxattr 227 +#define __NR_fsetxattr 228 +#define __NR_getxattr 229 +#define __NR_lgetxattr 230 +#define __NR_fgetxattr 231 +#define __NR_listxattr 232 +#define __NR_llistxattr 233 +#define __NR_flistxattr 234 +#define __NR_removexattr 235 +#define __NR_lremovexattr 236 +#define __NR_fremovexattr 237 +#define __NR_tkill 238 +#define __NR_sendfile64 239 +#define __NR_futex 240 +#define __NR_sched_setaffinity 241 +#define __NR_sched_getaffinity 242 +#define __NR_set_thread_area 243 +#define __NR_get_thread_area 244 +#define __NR_io_setup 245 +#define __NR_io_destroy 246 +#define __NR_io_getevents 247 +#define __NR_io_submit 248 +#define __NR_io_cancel 249 +#define __NR_fadvise64 250 + +#define __NR_exit_group 252 +#define __NR_lookup_dcookie 253 +#define __NR_epoll_create 254 +#define __NR_epoll_ctl 255 +#define __NR_epoll_wait 256 +#define __NR_remap_file_pages 257 +#define __NR_set_tid_address 258 +#define __NR_timer_create 259 +#define __NR_timer_settime (__NR_timer_create+1) +#define __NR_timer_gettime (__NR_timer_create+2) +#define __NR_timer_getoverrun (__NR_timer_create+3) +#define __NR_timer_delete (__NR_timer_create+4) +#define __NR_clock_settime (__NR_timer_create+5) +#define __NR_clock_gettime (__NR_timer_create+6) +#define __NR_clock_getres (__NR_timer_create+7) +#define __NR_clock_nanosleep (__NR_timer_create+8) +#define __NR_statfs64 268 +#define __NR_fstatfs64 269 +#define __NR_tgkill 270 +#define __NR_utimes 271 +#define __NR_fadvise64_64 272 +#define __NR_vserver 273 +#define __NR_mbind 274 +#define __NR_get_mempolicy 275 +#define __NR_set_mempolicy 276 +#define __NR_mq_open 277 +#define __NR_mq_unlink (__NR_mq_open+1) +#define __NR_mq_timedsend (__NR_mq_open+2) +#define __NR_mq_timedreceive (__NR_mq_open+3) +#define __NR_mq_notify (__NR_mq_open+4) +#define __NR_mq_getsetattr (__NR_mq_open+5) +#define __NR_kexec_load 283 +#define __NR_waitid 284 +#define __NR_add_key 286 +#define __NR_request_key 287 +#define __NR_keyctl 288 +#define __NR_cacheflush 289 +#define __NR_ioprio_set 290 +#define __NR_ioprio_get 291 +#define __NR_inotify_init 292 +#define __NR_inotify_add_watch 293 +#define __NR_inotify_rm_watch 294 +#define __NR_migrate_pages 295 +#define __NR_openat 296 +#define __NR_mkdirat 297 +#define __NR_mknodat 298 +#define __NR_fchownat 299 +#define __NR_futimesat 300 +#define __NR_fstatat64 301 +#define __NR_unlinkat 302 +#define __NR_renameat 303 +#define __NR_linkat 304 +#define __NR_symlinkat 305 +#define __NR_readlinkat 306 +#define __NR_fchmodat 307 +#define __NR_faccessat 308 +#define __NR_pselect6 309 +#define __NR_ppoll 310 +#define __NR_unshare 311 +#define __NR_set_robust_list 312 +#define __NR_get_robust_list 313 +#define __NR_splice 314 +#define __NR_sync_file_range 315 +#define __NR_tee 316 +#define __NR_vmsplice 317 +#define __NR_move_pages 318 +#define __NR_getcpu 319 +#define __NR_epoll_pwait 320 +#define __NR_utimensat 321 +#define __NR_signalfd 322 +#define __NR_timerfd_create 323 +#define __NR_eventfd 324 +#define __NR_fallocate 325 +#define __NR_timerfd_settime 326 +#define __NR_timerfd_gettime 327 +#define __NR_signalfd4 328 +#define __NR_eventfd2 329 +#define __NR_epoll_create1 330 +#define __NR_dup3 331 +#define __NR_pipe2 332 +#define __NR_inotify_init1 333 +#define __NR_preadv 334 +#define __NR_pwritev 335 +#define __NR_rt_tgsigqueueinfo 336 +#define __NR_perf_event_open 337 +#define __NR_recvmmsg 338 +#define __NR_setns 339 + +#endif /* _UAPI_ASM_UNISTD_H */ diff --git a/arch/mn10300/kernel/Makefile b/arch/mn10300/kernel/Makefile index 8f5f1e81baf..561029f7fa4 100644 --- a/arch/mn10300/kernel/Makefile +++ b/arch/mn10300/kernel/Makefile @@ -1,14 +1,15 @@ # # Makefile for the MN10300-specific core kernel code # -extra-y := head.o init_task.o vmlinux.lds +extra-y := head.o vmlinux.lds fpu-obj-y := fpu-nofpu.o fpu-nofpu-low.o fpu-obj-$(CONFIG_FPU) := fpu.o fpu-low.o obj-y := process.o signal.o entry.o traps.o irq.o \ - ptrace.o setup.o time.o sys_mn10300.o io.o kthread.o \ - switch_to.o mn10300_ksyms.o kernel_execve.o $(fpu-obj-y) + ptrace.o setup.o time.o sys_mn10300.o io.o \ + switch_to.o mn10300_ksyms.o $(fpu-obj-y) \ + csrc-mn10300.o cevt-mn10300.o obj-$(CONFIG_SMP) += smp.o smp-low.o @@ -20,13 +21,8 @@ obj-$(CONFIG_GDBSTUB) += gdb-stub.o gdb-low.o obj-$(CONFIG_GDBSTUB_ON_TTYSx) += gdb-io-serial.o gdb-io-serial-low.o obj-$(CONFIG_GDBSTUB_ON_TTYSMx) += gdb-io-ttysm.o gdb-io-ttysm-low.o -ifeq ($(CONFIG_MN10300_CACHE_ENABLED),y) -obj-$(CONFIG_GDBSTUB) += gdb-cache.o -endif - obj-$(CONFIG_MN10300_RTC) += rtc.o obj-$(CONFIG_PROFILE) += profile.o profile-low.o obj-$(CONFIG_MODULES) += module.o obj-$(CONFIG_KPROBES) += kprobes.o -obj-$(CONFIG_CSRC_MN10300) += csrc-mn10300.o -obj-$(CONFIG_CEVT_MN10300) += cevt-mn10300.o +obj-$(CONFIG_KGDB) += kgdb.o diff --git a/arch/mn10300/kernel/asm-offsets.c b/arch/mn10300/kernel/asm-offsets.c index 96f24fab7de..47b3bb0c04f 100644 --- a/arch/mn10300/kernel/asm-offsets.c +++ b/arch/mn10300/kernel/asm-offsets.c @@ -96,7 +96,7 @@ void foo(void) OFFSET(__rx_outp, mn10300_serial_port, rx_outp); OFFSET(__uart_state, mn10300_serial_port, uart.state); OFFSET(__tx_xchar, mn10300_serial_port, tx_xchar); - OFFSET(__tx_break, mn10300_serial_port, tx_break); + OFFSET(__tx_flags, mn10300_serial_port, tx_flags); OFFSET(__intr_flags, mn10300_serial_port, intr_flags); OFFSET(__rx_icr, mn10300_serial_port, rx_icr); OFFSET(__tx_icr, mn10300_serial_port, tx_icr); diff --git a/arch/mn10300/kernel/cevt-mn10300.c b/arch/mn10300/kernel/cevt-mn10300.c index d4cb535bf78..60f64ca1752 100644 --- a/arch/mn10300/kernel/cevt-mn10300.c +++ b/arch/mn10300/kernel/cevt-mn10300.c @@ -70,6 +70,16 @@ static void event_handler(struct clock_event_device *dev) { } +static inline void setup_jiffies_interrupt(int irq, + struct irqaction *action) +{ + u16 tmp; + setup_irq(irq, action); + set_intr_level(irq, NUM2GxICR_LEVEL(CONFIG_TIMER_IRQ_LEVEL)); + GxICR(irq) |= GxICR_ENABLE | GxICR_DETECT | GxICR_REQUEST; + tmp = GxICR(irq); +} + int __init init_clockevents(void) { struct clock_event_device *cd; @@ -89,9 +99,10 @@ int __init init_clockevents(void) cd->name = "Timestamp"; cd->features = CLOCK_EVT_FEAT_ONESHOT; - /* Calculate the min / max delta */ - clockevent_set_clock(cd, MN10300_JCCLK); + /* Calculate shift/mult. We want to spawn at least 1 second */ + clockevents_calc_mult_shift(cd, MN10300_JCCLK, 1); + /* Calculate the min / max delta */ cd->max_delta_ns = clockevent_delta2ns(TMJCBR_MAX, cd); cd->min_delta_ns = clockevent_delta2ns(100, cd); @@ -102,7 +113,7 @@ int __init init_clockevents(void) cd->set_next_event = next_event; iact = &per_cpu(timer_irq, cpu); - iact->flags = IRQF_DISABLED | IRQF_SHARED | IRQF_TIMER; + iact->flags = IRQF_SHARED | IRQF_TIMER; iact->handler = timer_interrupt; clockevents_register_device(cd); @@ -110,9 +121,9 @@ int __init init_clockevents(void) #if defined(CONFIG_SMP) && !defined(CONFIG_GENERIC_CLOCKEVENTS_BROADCAST) /* setup timer irq affinity so it only runs on this cpu */ { - struct irq_desc *desc; - desc = irq_to_desc(cd->irq); - cpumask_copy(desc->affinity, cpumask_of(cpu)); + struct irq_data *data; + data = irq_get_irq_data(cd->irq); + cpumask_copy(data->affinity, cpumask_of(cpu)); iact->flags |= IRQF_NOBALANCING; } #endif diff --git a/arch/mn10300/kernel/csrc-mn10300.c b/arch/mn10300/kernel/csrc-mn10300.c index ba2f0c4d6e0..45644cf18c4 100644 --- a/arch/mn10300/kernel/csrc-mn10300.c +++ b/arch/mn10300/kernel/csrc-mn10300.c @@ -29,7 +29,6 @@ static struct clocksource clocksource_mn10300 = { int __init init_clocksource(void) { startup_timestamp_counter(); - clocksource_set_clock(&clocksource_mn10300, MN10300_TSCCLK); - clocksource_register(&clocksource_mn10300); + clocksource_register_hz(&clocksource_mn10300, MN10300_TSCCLK); return 0; } diff --git a/arch/mn10300/kernel/entry.S b/arch/mn10300/kernel/entry.S index f00b9bafcd3..177d61de51c 100644 --- a/arch/mn10300/kernel/entry.S +++ b/arch/mn10300/kernel/entry.S @@ -15,7 +15,6 @@ #include <linux/sys.h> #include <linux/linkage.h> #include <asm/smp.h> -#include <asm/system.h> #include <asm/irqflags.h> #include <asm/thread_info.h> #include <asm/intctl-regs.h> @@ -56,6 +55,16 @@ ENTRY(ret_from_fork) mov d0,(REG_D0,fp) jmp syscall_exit +ENTRY(ret_from_kernel_thread) + call schedule_tail[],0 + mov (REG_D0,fp),d0 + mov (REG_A0,fp),a0 + calls (a0) + GET_THREAD_INFO a2 # A2 must be set on return from sys_exit() + clr d0 + mov d0,(REG_D0,fp) + jmp syscall_exit + ############################################################################### # # system call handler @@ -95,10 +104,14 @@ restore_all: ############################################################################### ALIGN syscall_exit_work: - btst _TIF_SYSCALL_TRACE,d2 - beq work_pending + mov (REG_EPSW,fp),d0 + and EPSW_nSL,d0 + beq resume_kernel # returning to supervisor mode + LOCAL_IRQ_ENABLE # could let syscall_trace_exit() call # schedule() instead + btst _TIF_SYSCALL_TRACE,d2 + beq work_pending mov fp,d0 call syscall_trace_exit[],0 # do_syscall_trace(regs) jmp resume_userspace @@ -111,6 +124,7 @@ work_pending: work_resched: call schedule[],0 +resume_userspace: # make sure we don't miss an interrupt setting need_resched or # sigpending between sampling and the rti LOCAL_IRQ_DISABLE @@ -119,6 +133,8 @@ work_resched: mov (TI_flags,a2),d2 btst _TIF_WORK_MASK,d2 beq restore_all + + LOCAL_IRQ_ENABLE btst _TIF_NEED_RESCHED,d2 bne work_resched @@ -155,21 +171,10 @@ ret_from_intr: mov (REG_EPSW,fp),d0 # need to deliver signals before # returning to userspace and EPSW_nSL,d0 - beq resume_kernel # returning to supervisor mode - -ENTRY(resume_userspace) - # make sure we don't miss an interrupt setting need_resched or - # sigpending between sampling and the rti - LOCAL_IRQ_DISABLE - - # is there any work to be done on int/exception return? - mov (TI_flags,a2),d2 - btst _TIF_WORK_MASK,d2 - bne work_pending - jmp restore_all + bne resume_userspace # returning to userspace #ifdef CONFIG_PREEMPT -ENTRY(resume_kernel) +resume_kernel: LOCAL_IRQ_DISABLE mov (TI_preempt_count,a2),d0 # non-zero preempt_count ? cmp 0,d0 @@ -184,6 +189,8 @@ need_resched: bne restore_all call preempt_schedule_irq[],0 jmp need_resched +#else + jmp resume_kernel #endif @@ -266,7 +273,11 @@ ENTRY(raw_bus_error) ############################################################################### # -# Miscellaneous exception entry points +# NMI exception entry points +# +# This is used by ordinary interrupt channels that have the GxICR_NMI bit set +# in addition to the main NMI and Watchdog channels. SMP NMI IPIs use this +# facility. # ############################################################################### ENTRY(nmi_handler) @@ -281,7 +292,7 @@ ENTRY(nmi_handler) and NMIAGR_GN,d0 lsr 0x2,d0 cmp CALL_FUNCTION_NMI_IPI,d0 - bne 5f # if not call function, jump + bne nmi_not_smp_callfunc # if not call function, jump # function call nmi ipi add 4,sp # no need to store TBR @@ -295,59 +306,38 @@ ENTRY(nmi_handler) call smp_nmi_call_function_interrupt[],0 RESTORE_ALL -5: -#ifdef CONFIG_GDBSTUB - cmp GDB_NMI_IPI,d0 - bne 3f # if not gdb nmi ipi, jump +nmi_not_smp_callfunc: +#ifdef CONFIG_KERNEL_DEBUGGER + cmp DEBUGGER_NMI_IPI,d0 + bne nmi_not_debugger # if not kernel debugger NMI IPI, jump - # gdb nmi ipi + # kernel debugger NMI IPI add 4,sp # no need to store TBR mov GxICR_DETECT,d0 # clear NMI - movbu d0,(GxICR(GDB_NMI_IPI)) - movhu (GxICR(GDB_NMI_IPI)),d0 + movbu d0,(GxICR(DEBUGGER_NMI_IPI)) + movhu (GxICR(DEBUGGER_NMI_IPI)),d0 and ~EPSW_NMID,epsw # enable NMI -#ifdef CONFIG_MN10300_CACHE_ENABLED - mov (gdbstub_nmi_opr_type),d0 - cmp GDBSTUB_NMI_CACHE_PURGE,d0 - bne 4f # if not gdb cache purge, jump - - # gdb cache purge nmi ipi - add -20,sp - mov d1,(4,sp) - mov a0,(8,sp) - mov a1,(12,sp) - mov mdr,d0 - mov d0,(16,sp) - call gdbstub_local_purge_cache[],0 - mov 0x1,d0 - mov (CPUID),d1 - asl d1,d0 - mov gdbstub_nmi_cpumask,a0 - bclr d0,(a0) - mov (4,sp),d1 - mov (8,sp),a0 - mov (12,sp),a1 - mov (16,sp),d0 - mov d0,mdr - add 20,sp - mov (sp),d0 - add 4,sp - rti -4: -#endif /* CONFIG_MN10300_CACHE_ENABLED */ - # gdb wait nmi ipi + mov (sp),d0 SAVE_ALL - call gdbstub_nmi_wait[],0 + mov fp,d0 # arg 0: stacked register file + mov a2,d1 # arg 1: exception number + call debugger_nmi_interrupt[],0 RESTORE_ALL -3: -#endif /* CONFIG_GDBSTUB */ + +nmi_not_debugger: +#endif /* CONFIG_KERNEL_DEBUGGER */ mov (sp),d0 # restore TBR to d0 add 4,sp #endif /* CONFIG_SMP */ bra __common_exception_nonmi +############################################################################### +# +# General exception entry point +# +############################################################################### ENTRY(__common_exception) add -4,sp mov d0,(sp) @@ -606,7 +596,7 @@ ENTRY(sys_call_table) .long sys_ni_syscall /* vm86 */ .long sys_ni_syscall /* Old sys_query_module */ .long sys_poll - .long sys_nfsservctl + .long sys_ni_syscall /* was nfsservctl */ .long sys_setresgid16 /* 170 */ .long sys_getresgid16 .long sys_prctl @@ -776,6 +766,7 @@ ENTRY(sys_call_table) .long sys_rt_tgsigqueueinfo .long sys_perf_event_open .long sys_recvmmsg + .long sys_setns nr_syscalls=(.-sys_call_table)/4 diff --git a/arch/mn10300/kernel/fpu.c b/arch/mn10300/kernel/fpu.c index 5f9c3fa19a8..064fa194de2 100644 --- a/arch/mn10300/kernel/fpu.c +++ b/arch/mn10300/kernel/fpu.c @@ -12,7 +12,6 @@ #include <asm/fpu.h> #include <asm/elf.h> #include <asm/exceptions.h> -#include <asm/system.h> #ifdef CONFIG_LAZY_SAVE_FPU struct task_struct *fpu_state_owner; @@ -70,24 +69,6 @@ asmlinkage void fpu_exception(struct pt_regs *regs, enum exception_code code) } /* - * handle an FPU invalid_op exception - * - Derived from DO_EINFO() macro in arch/mn10300/kernel/traps.c - */ -asmlinkage void fpu_invalid_op(struct pt_regs *regs, enum exception_code code) -{ - siginfo_t info; - - if (!user_mode(regs)) - die_if_no_fixup("FPU invalid opcode", regs, code); - - info.si_signo = SIGILL; - info.si_errno = 0; - info.si_code = ILL_COPROC; - info.si_addr = (void *) regs->pc; - force_sig_info(info.si_signo, &info, current); -} - -/* * save the FPU state to a signal context */ int fpu_setup_sigcontext(struct fpucontext *fpucontext) diff --git a/arch/mn10300/kernel/gdb-cache.S b/arch/mn10300/kernel/gdb-cache.S deleted file mode 100644 index 1108badc3d3..00000000000 --- a/arch/mn10300/kernel/gdb-cache.S +++ /dev/null @@ -1,105 +0,0 @@ -############################################################################### -# -# MN10300 Low-level cache purging routines for gdbstub -# -# Copyright (C) 2007 Red Hat, Inc. All Rights Reserved. -# Written by David Howells (dhowells@redhat.com) -# -# This program is free software; you can redistribute it and/or -# modify it under the terms of the GNU General Public Licence -# as published by the Free Software Foundation; either version -# 2 of the Licence, or (at your option) any later version. -# -############################################################################### -#include <linux/sys.h> -#include <linux/linkage.h> -#include <asm/smp.h> -#include <asm/cache.h> -#include <asm/cpu-regs.h> -#include <asm/exceptions.h> -#include <asm/frame.inc> -#include <asm/serial-regs.h> - - .text - -############################################################################### -# -# GDB stub cache purge -# -############################################################################### - .type gdbstub_purge_cache,@function -ENTRY(gdbstub_purge_cache) - ####################################################################### - # read the addresses tagged in the cache's tag RAM and attempt to flush - # those addresses specifically - # - we rely on the hardware to filter out invalid tag entry addresses - mov DCACHE_TAG(0,0),a0 # dcache tag RAM access address - mov DCACHE_PURGE(0,0),a1 # dcache purge request address - mov L1_CACHE_NWAYS*L1_CACHE_NENTRIES,d1 # total number of entries - -mn10300_dcache_flush_loop: - mov (a0),d0 - and L1_CACHE_TAG_ADDRESS|L1_CACHE_TAG_ENTRY,d0 - or L1_CACHE_TAG_VALID,d0 # retain valid entries in the - # cache - mov d0,(a1) # conditional purge - -mn10300_dcache_flush_skip: - add L1_CACHE_BYTES,a0 - add L1_CACHE_BYTES,a1 - add -1,d1 - bne mn10300_dcache_flush_loop - -;; # unconditionally flush and invalidate the dcache -;; mov DCACHE_PURGE(0,0),a1 # dcache purge request address -;; mov L1_CACHE_NWAYS*L1_CACHE_NENTRIES,d1 # total number of -;; # entries -;; -;; gdbstub_purge_cache__dcache_loop: -;; mov (a1),d0 # unconditional purge -;; -;; add L1_CACHE_BYTES,a1 -;; add -1,d1 -;; bne gdbstub_purge_cache__dcache_loop - - ####################################################################### - # now invalidate the icache - mov CHCTR,a0 - movhu (a0),a1 - - mov epsw,d1 - and ~EPSW_IE,epsw - nop - nop - - # disable the icache - and ~CHCTR_ICEN,d0 - movhu d0,(a0) - - # and wait for it to calm down - setlb - movhu (a0),d0 - btst CHCTR_ICBUSY,d0 - lne - - # invalidate - or CHCTR_ICINV,d0 - movhu d0,(a0) - - # wait for the cache to finish - mov CHCTR,a0 - setlb - movhu (a0),d0 - btst CHCTR_ICBUSY,d0 - lne - - # and reenable it - movhu a1,(a0) - movhu (a0),d0 # read back to flush - # (SIGILLs all over without this) - - mov d1,epsw - - ret [],0 - - .size gdbstub_purge_cache,.-gdbstub_purge_cache diff --git a/arch/mn10300/kernel/gdb-io-serial.c b/arch/mn10300/kernel/gdb-io-serial.c index 0d5d63c91dc..df51242744c 100644 --- a/arch/mn10300/kernel/gdb-io-serial.c +++ b/arch/mn10300/kernel/gdb-io-serial.c @@ -18,7 +18,6 @@ #include <linux/nmi.h> #include <asm/pgtable.h> -#include <asm/system.h> #include <asm/gdb-stub.h> #include <asm/exceptions.h> #include <asm/serial-regs.h> @@ -73,7 +72,8 @@ void gdbstub_io_init(void) GDBPORT_SERIAL_IER = UART_IER_RDI | UART_IER_RLSI; /* permit level 0 IRQs to take place */ - local_change_intr_mask_level(NUM2EPSW_IM(CONFIG_GDBSTUB_IRQ_LEVEL + 1)); + arch_local_change_intr_mask_level( + NUM2EPSW_IM(CONFIG_GDBSTUB_IRQ_LEVEL + 1)); } /* diff --git a/arch/mn10300/kernel/gdb-io-ttysm.c b/arch/mn10300/kernel/gdb-io-ttysm.c index 97dfda23342..caae8cac9db 100644 --- a/arch/mn10300/kernel/gdb-io-ttysm.c +++ b/arch/mn10300/kernel/gdb-io-ttysm.c @@ -17,7 +17,6 @@ #include <linux/init.h> #include <linux/tty.h> #include <asm/pgtable.h> -#include <asm/system.h> #include <asm/gdb-stub.h> #include <asm/exceptions.h> #include <unit/clock.h> @@ -59,10 +58,10 @@ void __init gdbstub_io_init(void) /* we want to get serial receive interrupts */ set_intr_level(gdbstub_port->rx_irq, - NUM2GxICR_LEVEL(CONFIG_GDBSTUB_IRQ_LEVEL)); + NUM2GxICR_LEVEL(CONFIG_DEBUGGER_IRQ_LEVEL)); set_intr_level(gdbstub_port->tx_irq, - NUM2GxICR_LEVEL(CONFIG_GDBSTUB_IRQ_LEVEL)); - set_intr_stub(NUM2EXCEP_IRQ_LEVEL(CONFIG_GDBSTUB_IRQ_LEVEL), + NUM2GxICR_LEVEL(CONFIG_DEBUGGER_IRQ_LEVEL)); + set_intr_stub(NUM2EXCEP_IRQ_LEVEL(CONFIG_DEBUGGER_IRQ_LEVEL), gdbstub_io_rx_handler); *gdbstub_port->rx_icr |= GxICR_ENABLE; @@ -87,7 +86,8 @@ void __init gdbstub_io_init(void) tmp = *gdbstub_port->_control; /* permit level 0 IRQs only */ - local_change_intr_mask_level(NUM2EPSW_IM(CONFIG_GDBSTUB_IRQ_LEVEL + 1)); + arch_local_change_intr_mask_level( + NUM2EPSW_IM(CONFIG_DEBUGGER_IRQ_LEVEL + 1)); } /* diff --git a/arch/mn10300/kernel/gdb-stub.c b/arch/mn10300/kernel/gdb-stub.c index a5fc3f05309..a128c57b586 100644 --- a/arch/mn10300/kernel/gdb-stub.c +++ b/arch/mn10300/kernel/gdb-stub.c @@ -130,10 +130,9 @@ #include <linux/bug.h> #include <asm/pgtable.h> -#include <asm/system.h> #include <asm/gdb-stub.h> #include <asm/exceptions.h> -#include <asm/cacheflush.h> +#include <asm/debugger.h> #include <asm/serial-regs.h> #include <asm/busctl-regs.h> #include <unit/leds.h> @@ -405,6 +404,7 @@ static int hexToInt(char **ptr, int *intValue) return (numChars); } +#ifdef CONFIG_GDBSTUB_ALLOW_SINGLE_STEP /* * We single-step by setting breakpoints. When an exception * is handled, we need to restore the instructions hoisted @@ -729,6 +729,7 @@ static int gdbstub_single_step(struct pt_regs *regs) __gdbstub_restore_bp(); return -EFAULT; } +#endif /* CONFIG_GDBSTUB_ALLOW_SINGLE_STEP */ #ifdef CONFIG_GDBSTUB_CONSOLE @@ -796,7 +797,7 @@ unsigned char *mem2hex(const void *_mem, char *buf, int count, int may_fault) if ((u32) mem & 1 && count >= 1) { if (gdbstub_read_byte(mem, ch) != 0) return 0; - buf = pack_hex_byte(buf, ch[0]); + buf = hex_byte_pack(buf, ch[0]); mem++; count--; } @@ -804,8 +805,8 @@ unsigned char *mem2hex(const void *_mem, char *buf, int count, int may_fault) if ((u32) mem & 3 && count >= 2) { if (gdbstub_read_word(mem, ch) != 0) return 0; - buf = pack_hex_byte(buf, ch[0]); - buf = pack_hex_byte(buf, ch[1]); + buf = hex_byte_pack(buf, ch[0]); + buf = hex_byte_pack(buf, ch[1]); mem += 2; count -= 2; } @@ -813,10 +814,10 @@ unsigned char *mem2hex(const void *_mem, char *buf, int count, int may_fault) while (count >= 4) { if (gdbstub_read_dword(mem, ch) != 0) return 0; - buf = pack_hex_byte(buf, ch[0]); - buf = pack_hex_byte(buf, ch[1]); - buf = pack_hex_byte(buf, ch[2]); - buf = pack_hex_byte(buf, ch[3]); + buf = hex_byte_pack(buf, ch[0]); + buf = hex_byte_pack(buf, ch[1]); + buf = hex_byte_pack(buf, ch[2]); + buf = hex_byte_pack(buf, ch[3]); mem += 4; count -= 4; } @@ -824,8 +825,8 @@ unsigned char *mem2hex(const void *_mem, char *buf, int count, int may_fault) if (count >= 2) { if (gdbstub_read_word(mem, ch) != 0) return 0; - buf = pack_hex_byte(buf, ch[0]); - buf = pack_hex_byte(buf, ch[1]); + buf = hex_byte_pack(buf, ch[0]); + buf = hex_byte_pack(buf, ch[1]); mem += 2; count -= 2; } @@ -833,7 +834,7 @@ unsigned char *mem2hex(const void *_mem, char *buf, int count, int may_fault) if (count >= 1) { if (gdbstub_read_byte(mem, ch) != 0) return 0; - buf = pack_hex_byte(buf, ch[0]); + buf = hex_byte_pack(buf, ch[0]); } *buf = 0; @@ -1171,7 +1172,7 @@ int gdbstub_clear_breakpoint(u8 *addr, int len) /* * This function does all command processing for interfacing to gdb - * - returns 1 if the exception should be skipped, 0 otherwise. + * - returns 0 if the exception should be skipped, -ERROR otherwise. */ static int gdbstub(struct pt_regs *regs, enum exception_code excep) { @@ -1186,7 +1187,7 @@ static int gdbstub(struct pt_regs *regs, enum exception_code excep) int loop; if (excep == EXCEP_FPU_DISABLED) - return 0; + return -ENOTSUPP; gdbstub_flush_caches = 0; @@ -1194,7 +1195,8 @@ static int gdbstub(struct pt_regs *regs, enum exception_code excep) asm volatile("mov mdr,%0" : "=d"(mdr)); local_save_flags(epsw); - local_change_intr_mask_level(NUM2EPSW_IM(CONFIG_GDBSTUB_IRQ_LEVEL + 1)); + arch_local_change_intr_mask_level( + NUM2EPSW_IM(CONFIG_DEBUGGER_IRQ_LEVEL + 1)); gdbstub_store_fpu(); @@ -1207,11 +1209,13 @@ static int gdbstub(struct pt_regs *regs, enum exception_code excep) /* if we were single stepping, restore the opcodes hoisted for the * breakpoint[s] */ broke = 0; +#ifdef CONFIG_GDBSTUB_ALLOW_SINGLE_STEP if ((step_bp[0].addr && step_bp[0].addr == (u8 *) regs->pc) || (step_bp[1].addr && step_bp[1].addr == (u8 *) regs->pc)) broke = 1; __gdbstub_restore_bp(); +#endif if (gdbstub_rx_unget) { sigval = SIGINT; @@ -1268,13 +1272,13 @@ static int gdbstub(struct pt_regs *regs, enum exception_code excep) ptr = mem2hex(title, ptr, sizeof(title) - 1, 0); hx = hex_asc_hi(excep >> 8); - ptr = pack_hex_byte(ptr, hx); + ptr = hex_byte_pack(ptr, hx); hx = hex_asc_lo(excep >> 8); - ptr = pack_hex_byte(ptr, hx); + ptr = hex_byte_pack(ptr, hx); hx = hex_asc_hi(excep); - ptr = pack_hex_byte(ptr, hx); + ptr = hex_byte_pack(ptr, hx); hx = hex_asc_lo(excep); - ptr = pack_hex_byte(ptr, hx); + ptr = hex_byte_pack(ptr, hx); ptr = mem2hex(crlf, ptr, sizeof(crlf) - 1, 0); *ptr = 0; @@ -1286,21 +1290,21 @@ static int gdbstub(struct pt_regs *regs, enum exception_code excep) ptr = mem2hex(tbcberr, ptr, sizeof(tbcberr) - 1, 0); hx = hex_asc_hi(bcberr >> 24); - ptr = pack_hex_byte(ptr, hx); + ptr = hex_byte_pack(ptr, hx); hx = hex_asc_lo(bcberr >> 24); - ptr = pack_hex_byte(ptr, hx); + ptr = hex_byte_pack(ptr, hx); hx = hex_asc_hi(bcberr >> 16); - ptr = pack_hex_byte(ptr, hx); + ptr = hex_byte_pack(ptr, hx); hx = hex_asc_lo(bcberr >> 16); - ptr = pack_hex_byte(ptr, hx); + ptr = hex_byte_pack(ptr, hx); hx = hex_asc_hi(bcberr >> 8); - ptr = pack_hex_byte(ptr, hx); + ptr = hex_byte_pack(ptr, hx); hx = hex_asc_lo(bcberr >> 8); - ptr = pack_hex_byte(ptr, hx); + ptr = hex_byte_pack(ptr, hx); hx = hex_asc_hi(bcberr); - ptr = pack_hex_byte(ptr, hx); + ptr = hex_byte_pack(ptr, hx); hx = hex_asc_lo(bcberr); - ptr = pack_hex_byte(ptr, hx); + ptr = hex_byte_pack(ptr, hx); ptr = mem2hex(crlf, ptr, sizeof(crlf) - 1, 0); *ptr = 0; @@ -1316,12 +1320,12 @@ static int gdbstub(struct pt_regs *regs, enum exception_code excep) * Send trap type (converted to signal) */ *ptr++ = 'T'; - ptr = pack_hex_byte(ptr, sigval); + ptr = hex_byte_pack(ptr, sigval); /* * Send Error PC */ - ptr = pack_hex_byte(ptr, GDB_REGID_PC); + ptr = hex_byte_pack(ptr, GDB_REGID_PC); *ptr++ = ':'; ptr = mem2hex(®s->pc, ptr, 4, 0); *ptr++ = ';'; @@ -1329,7 +1333,7 @@ static int gdbstub(struct pt_regs *regs, enum exception_code excep) /* * Send frame pointer */ - ptr = pack_hex_byte(ptr, GDB_REGID_FP); + ptr = hex_byte_pack(ptr, GDB_REGID_FP); *ptr++ = ':'; ptr = mem2hex(®s->a3, ptr, 4, 0); *ptr++ = ';'; @@ -1338,7 +1342,7 @@ static int gdbstub(struct pt_regs *regs, enum exception_code excep) * Send stack pointer */ ssp = (unsigned long) (regs + 1); - ptr = pack_hex_byte(ptr, GDB_REGID_SP); + ptr = hex_byte_pack(ptr, GDB_REGID_SP); *ptr++ = ':'; ptr = mem2hex(&ssp, ptr, 4, 0); *ptr++ = ';'; @@ -1547,17 +1551,21 @@ packet_waiting: * Step to next instruction */ case 's': - /* - * using the T flag doesn't seem to perform single + /* Using the T flag doesn't seem to perform single * stepping (it seems to wind up being caught by the * JTAG unit), so we have to use breakpoints and * continue instead. */ +#ifdef CONFIG_GDBSTUB_ALLOW_SINGLE_STEP if (gdbstub_single_step(regs) < 0) /* ignore any fault error for now */ gdbstub_printk("unable to set single-step" " bp\n"); goto done; +#else + gdbstub_strcpy(output_buffer, "E01"); + break; +#endif /* * Set baud rate (bBB) @@ -1656,7 +1664,7 @@ done: * NB: We flush both caches, just to be sure... */ if (gdbstub_flush_caches) - gdbstub_purge_cache(); + debugger_local_cache_flushinv(); gdbstub_load_fpu(); mn10300_set_gdbleds(0); @@ -1666,14 +1674,23 @@ done: touch_softlockup_watchdog(); local_irq_restore(epsw); - return 1; + return 0; +} + +/* + * Determine if we hit a debugger special breakpoint that needs skipping over + * automatically. + */ +int at_debugger_breakpoint(struct pt_regs *regs) +{ + return 0; } /* * handle event interception */ -asmlinkage int gdbstub_intercept(struct pt_regs *regs, - enum exception_code excep) +asmlinkage int debugger_intercept(enum exception_code excep, + int signo, int si_code, struct pt_regs *regs) { static u8 notfirst = 1; int ret; @@ -1687,7 +1704,7 @@ asmlinkage int gdbstub_intercept(struct pt_regs *regs, asm("mov mdr,%0" : "=d"(mdr)); gdbstub_entry( - "--> gdbstub_intercept(%p,%04x) [MDR=%lx PC=%lx]\n", + "--> debugger_intercept(%p,%04x) [MDR=%lx PC=%lx]\n", regs, excep, mdr, regs->pc); gdbstub_entry( @@ -1721,7 +1738,7 @@ asmlinkage int gdbstub_intercept(struct pt_regs *regs, ret = gdbstub(regs, excep); - gdbstub_entry("<-- gdbstub_intercept()\n"); + gdbstub_entry("<-- debugger_intercept()\n"); gdbstub_busy = 0; return ret; } diff --git a/arch/mn10300/kernel/init_task.c b/arch/mn10300/kernel/init_task.c deleted file mode 100644 index a481b043bea..00000000000 --- a/arch/mn10300/kernel/init_task.c +++ /dev/null @@ -1,39 +0,0 @@ -/* MN10300 Initial task definitions - * - * Copyright (C) 2007 Matsushita Electric Industrial Co., Ltd. - * Copyright (C) 2007 Red Hat, Inc. All Rights Reserved. - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public Licence - * as published by the Free Software Foundation; either version - * 2 of the Licence, or (at your option) any later version. - */ -#include <linux/mm.h> -#include <linux/module.h> -#include <linux/sched.h> -#include <linux/init.h> -#include <linux/init_task.h> -#include <linux/fs.h> -#include <linux/mqueue.h> -#include <asm/uaccess.h> -#include <asm/pgtable.h> - -static struct signal_struct init_signals = INIT_SIGNALS(init_signals); -static struct sighand_struct init_sighand = INIT_SIGHAND(init_sighand); -/* - * Initial thread structure. - * - * We need to make sure that this is THREAD_SIZE aligned due to the - * way process stacks are handled. This is done by having a special - * "init_task" linker map entry.. - */ -union thread_union init_thread_union __init_task_data = - { INIT_THREAD_INFO(init_task) }; - -/* - * Initial task structure. - * - * All other task structs will be allocated on slabs in fork.c - */ -struct task_struct init_task = INIT_TASK(init_task); -EXPORT_SYMBOL(init_task); diff --git a/arch/mn10300/kernel/internal.h b/arch/mn10300/kernel/internal.h index 6a064ab5af0..561785581f6 100644 --- a/arch/mn10300/kernel/internal.h +++ b/arch/mn10300/kernel/internal.h @@ -9,18 +9,16 @@ * 2 of the Licence, or (at your option) any later version. */ +#include <linux/irqreturn.h> + struct clocksource; struct clock_event_device; /* - * kthread.S - */ -extern int kernel_thread_helper(int); - -/* * entry.S */ extern void ret_from_fork(struct task_struct *) __attribute__((noreturn)); +extern void ret_from_kernel_thread(struct task_struct *) __attribute__((noreturn)); /* * smp-low.S @@ -30,16 +28,13 @@ extern void mn10300_low_ipi_handler(void); #endif /* - * time.c + * smp.c */ -extern irqreturn_t local_timer_interrupt(void); +#ifdef CONFIG_SMP +extern void smp_jump_to_debugger(void); +#endif /* * time.c */ -#ifdef CONFIG_CEVT_MN10300 -extern void clockevent_set_clock(struct clock_event_device *, unsigned int); -#endif -#ifdef CONFIG_CSRC_MN10300 -extern void clocksource_set_clock(struct clocksource *, unsigned int); -#endif +extern irqreturn_t local_timer_interrupt(void); diff --git a/arch/mn10300/kernel/irq.c b/arch/mn10300/kernel/irq.c index c2e44597c22..6ab3b73efcf 100644 --- a/arch/mn10300/kernel/irq.c +++ b/arch/mn10300/kernel/irq.c @@ -37,8 +37,9 @@ atomic_t irq_err_count; /* * MN10300 interrupt controller operations */ -static void mn10300_cpupic_ack(unsigned int irq) +static void mn10300_cpupic_ack(struct irq_data *d) { + unsigned int irq = d->irq; unsigned long flags; u16 tmp; @@ -61,13 +62,14 @@ static void __mask_and_set_icr(unsigned int irq, arch_local_irq_restore(flags); } -static void mn10300_cpupic_mask(unsigned int irq) +static void mn10300_cpupic_mask(struct irq_data *d) { - __mask_and_set_icr(irq, GxICR_LEVEL, 0); + __mask_and_set_icr(d->irq, GxICR_LEVEL, 0); } -static void mn10300_cpupic_mask_ack(unsigned int irq) +static void mn10300_cpupic_mask_ack(struct irq_data *d) { + unsigned int irq = d->irq; #ifdef CONFIG_SMP unsigned long flags; u16 tmp; @@ -85,7 +87,7 @@ static void mn10300_cpupic_mask_ack(unsigned int irq) tmp2 = GxICR(irq); irq_affinity_online[irq] = - any_online_cpu(*irq_desc[irq].affinity); + cpumask_any_and(d->affinity, cpu_online_mask); CROSS_GxICR(irq, irq_affinity_online[irq]) = (tmp & (GxICR_LEVEL | GxICR_ENABLE)) | GxICR_DETECT; tmp = CROSS_GxICR(irq, irq_affinity_online[irq]); @@ -97,13 +99,14 @@ static void mn10300_cpupic_mask_ack(unsigned int irq) #endif /* CONFIG_SMP */ } -static void mn10300_cpupic_unmask(unsigned int irq) +static void mn10300_cpupic_unmask(struct irq_data *d) { - __mask_and_set_icr(irq, GxICR_LEVEL, GxICR_ENABLE); + __mask_and_set_icr(d->irq, GxICR_LEVEL, GxICR_ENABLE); } -static void mn10300_cpupic_unmask_clear(unsigned int irq) +static void mn10300_cpupic_unmask_clear(struct irq_data *d) { + unsigned int irq = d->irq; /* the MN10300 PIC latches its interrupt request bit, even after the * device has ceased to assert its interrupt line and the interrupt * channel has been disabled in the PIC, so for level-triggered @@ -121,7 +124,8 @@ static void mn10300_cpupic_unmask_clear(unsigned int irq) } else { tmp = GxICR(irq); - irq_affinity_online[irq] = any_online_cpu(*irq_desc[irq].affinity); + irq_affinity_online[irq] = cpumask_any_and(d->affinity, + cpu_online_mask); CROSS_GxICR(irq, irq_affinity_online[irq]) = (tmp & GxICR_LEVEL) | GxICR_ENABLE | GxICR_DETECT; tmp = CROSS_GxICR(irq, irq_affinity_online[irq]); } @@ -134,60 +138,15 @@ static void mn10300_cpupic_unmask_clear(unsigned int irq) #ifdef CONFIG_SMP static int -mn10300_cpupic_setaffinity(unsigned int irq, const struct cpumask *mask) +mn10300_cpupic_setaffinity(struct irq_data *d, const struct cpumask *mask, + bool force) { unsigned long flags; - int err; flags = arch_local_cli_save(); - - /* check irq no */ - switch (irq) { - case TMJCIRQ: - case RESCHEDULE_IPI: - case CALL_FUNC_SINGLE_IPI: - case LOCAL_TIMER_IPI: - case FLUSH_CACHE_IPI: - case CALL_FUNCTION_NMI_IPI: - case GDB_NMI_IPI: -#ifdef CONFIG_MN10300_TTYSM0 - case SC0RXIRQ: - case SC0TXIRQ: -#ifdef CONFIG_MN10300_TTYSM0_TIMER8 - case TM8IRQ: -#elif CONFIG_MN10300_TTYSM0_TIMER2 - case TM2IRQ: -#endif /* CONFIG_MN10300_TTYSM0_TIMER8 */ -#endif /* CONFIG_MN10300_TTYSM0 */ - -#ifdef CONFIG_MN10300_TTYSM1 - case SC1RXIRQ: - case SC1TXIRQ: -#ifdef CONFIG_MN10300_TTYSM1_TIMER12 - case TM12IRQ: -#elif CONFIG_MN10300_TTYSM1_TIMER9 - case TM9IRQ: -#elif CONFIG_MN10300_TTYSM1_TIMER3 - case TM3IRQ: -#endif /* CONFIG_MN10300_TTYSM1_TIMER12 */ -#endif /* CONFIG_MN10300_TTYSM1 */ - -#ifdef CONFIG_MN10300_TTYSM2 - case SC2RXIRQ: - case SC2TXIRQ: - case TM10IRQ: -#endif /* CONFIG_MN10300_TTYSM2 */ - err = -1; - break; - - default: - set_bit(irq, irq_affinity_request); - err = 0; - break; - } - + set_bit(d->irq, irq_affinity_request); arch_local_irq_restore(flags); - return err; + return 0; } #endif /* CONFIG_SMP */ @@ -202,15 +161,15 @@ mn10300_cpupic_setaffinity(unsigned int irq, const struct cpumask *mask) * mask_ack() is provided), and mask_ack() just masks. */ static struct irq_chip mn10300_cpu_pic_level = { - .name = "cpu_l", - .disable = mn10300_cpupic_mask, - .enable = mn10300_cpupic_unmask_clear, - .ack = NULL, - .mask = mn10300_cpupic_mask, - .mask_ack = mn10300_cpupic_mask, - .unmask = mn10300_cpupic_unmask_clear, + .name = "cpu_l", + .irq_disable = mn10300_cpupic_mask, + .irq_enable = mn10300_cpupic_unmask_clear, + .irq_ack = NULL, + .irq_mask = mn10300_cpupic_mask, + .irq_mask_ack = mn10300_cpupic_mask, + .irq_unmask = mn10300_cpupic_unmask_clear, #ifdef CONFIG_SMP - .set_affinity = mn10300_cpupic_setaffinity, + .irq_set_affinity = mn10300_cpupic_setaffinity, #endif }; @@ -220,15 +179,15 @@ static struct irq_chip mn10300_cpu_pic_level = { * We use the latch clearing function of the PIC as the 'ACK' function. */ static struct irq_chip mn10300_cpu_pic_edge = { - .name = "cpu_e", - .disable = mn10300_cpupic_mask, - .enable = mn10300_cpupic_unmask, - .ack = mn10300_cpupic_ack, - .mask = mn10300_cpupic_mask, - .mask_ack = mn10300_cpupic_mask_ack, - .unmask = mn10300_cpupic_unmask, + .name = "cpu_e", + .irq_disable = mn10300_cpupic_mask, + .irq_enable = mn10300_cpupic_unmask, + .irq_ack = mn10300_cpupic_ack, + .irq_mask = mn10300_cpupic_mask, + .irq_mask_ack = mn10300_cpupic_mask_ack, + .irq_unmask = mn10300_cpupic_unmask, #ifdef CONFIG_SMP - .set_affinity = mn10300_cpupic_setaffinity, + .irq_set_affinity = mn10300_cpupic_setaffinity, #endif }; @@ -252,39 +211,13 @@ void set_intr_level(int irq, u16 level) __mask_and_set_icr(irq, GxICR_ENABLE, level); } -void mn10300_intc_set_level(unsigned int irq, unsigned int level) -{ - set_intr_level(irq, NUM2GxICR_LEVEL(level) & GxICR_LEVEL); -} - -void mn10300_intc_clear(unsigned int irq) -{ - __mask_and_set_icr(irq, GxICR_LEVEL | GxICR_ENABLE, GxICR_DETECT); -} - -void mn10300_intc_set(unsigned int irq) -{ - __mask_and_set_icr(irq, 0, GxICR_REQUEST | GxICR_DETECT); -} - -void mn10300_intc_enable(unsigned int irq) -{ - mn10300_cpupic_unmask(irq); -} - -void mn10300_intc_disable(unsigned int irq) -{ - mn10300_cpupic_mask(irq); -} - /* * mark an interrupt to be ACK'd after interrupt handlers have been run rather * than before - * - see Documentation/mn10300/features.txt */ void mn10300_set_lateack_irq_type(int irq) { - set_irq_chip_and_handler(irq, &mn10300_cpu_pic_level, + irq_set_chip_and_handler(irq, &mn10300_cpu_pic_level, handle_level_irq); } @@ -296,12 +229,12 @@ void __init init_IRQ(void) int irq; for (irq = 0; irq < NR_IRQS; irq++) - if (irq_desc[irq].chip == &no_irq_chip) + if (irq_get_chip(irq) == &no_irq_chip) /* due to the PIC latching interrupt requests, even * when the IRQ is disabled, IRQ_PENDING is superfluous * and we can use handle_level_irq() for edge-triggered * interrupts */ - set_irq_chip_and_handler(irq, &mn10300_cpu_pic_edge, + irq_set_chip_and_handler(irq, &mn10300_cpu_pic_edge, handle_level_irq); unit_init_IRQ(); @@ -356,91 +289,42 @@ asmlinkage void do_IRQ(void) /* * Display interrupt management information through /proc/interrupts */ -int show_interrupts(struct seq_file *p, void *v) +int arch_show_interrupts(struct seq_file *p, int prec) { - int i = *(loff_t *) v, j, cpu; - struct irqaction *action; - unsigned long flags; - - switch (i) { - /* display column title bar naming CPUs */ - case 0: - seq_printf(p, " "); - for (j = 0; j < NR_CPUS; j++) - if (cpu_online(j)) - seq_printf(p, "CPU%d ", j); - seq_putc(p, '\n'); - break; - - /* display information rows, one per active CPU */ - case 1 ... NR_IRQS - 1: - raw_spin_lock_irqsave(&irq_desc[i].lock, flags); - - action = irq_desc[i].action; - if (action) { - seq_printf(p, "%3d: ", i); - for_each_present_cpu(cpu) - seq_printf(p, "%10u ", kstat_irqs_cpu(i, cpu)); - - if (i < NR_CPU_IRQS) - seq_printf(p, " %14s.%u", - irq_desc[i].chip->name, - (GxICR(i) & GxICR_LEVEL) >> - GxICR_LEVEL_SHIFT); - else - seq_printf(p, " %14s", - irq_desc[i].chip->name); - - seq_printf(p, " %s", action->name); - - for (action = action->next; - action; - action = action->next) - seq_printf(p, ", %s", action->name); - - seq_putc(p, '\n'); - } - - raw_spin_unlock_irqrestore(&irq_desc[i].lock, flags); - break; - - /* polish off with NMI and error counters */ - case NR_IRQS: #ifdef CONFIG_MN10300_WD_TIMER - seq_printf(p, "NMI: "); - for (j = 0; j < NR_CPUS; j++) - if (cpu_online(j)) - seq_printf(p, "%10u ", nmi_count(j)); - seq_putc(p, '\n'); -#endif + int j; - seq_printf(p, "ERR: %10u\n", atomic_read(&irq_err_count)); - break; - } + seq_printf(p, "%*s: ", prec, "NMI"); + for (j = 0; j < NR_CPUS; j++) + if (cpu_online(j)) + seq_printf(p, "%10u ", nmi_count(j)); + seq_putc(p, '\n'); +#endif + seq_printf(p, "%*s: ", prec, "ERR"); + seq_printf(p, "%10u\n", atomic_read(&irq_err_count)); return 0; } #ifdef CONFIG_HOTPLUG_CPU void migrate_irqs(void) { - irq_desc_t *desc; int irq; unsigned int self, new; unsigned long flags; self = smp_processor_id(); for (irq = 0; irq < NR_IRQS; irq++) { - desc = irq_desc + irq; + struct irq_data *data = irq_get_irq_data(irq); - if (desc->status == IRQ_PER_CPU) + if (irqd_is_per_cpu(data)) continue; - if (cpu_isset(self, irq_desc[irq].affinity) && - !cpus_intersects(irq_affinity[irq], cpu_online_map)) { + if (cpumask_test_cpu(self, &data->affinity) && + !cpumask_intersects(&irq_affinity[irq], cpu_online_mask)) { int cpu_id; - cpu_id = first_cpu(cpu_online_map); - cpu_set(cpu_id, irq_desc[irq].affinity); + cpu_id = cpumask_first(cpu_online_mask); + cpumask_set_cpu(cpu_id, &data->affinity); } /* We need to operate irq_affinity_online atomically. */ arch_local_cli_save(flags); @@ -451,7 +335,8 @@ void migrate_irqs(void) GxICR(irq) = x & GxICR_LEVEL; tmp = GxICR(irq); - new = any_online_cpu(irq_desc[irq].affinity); + new = cpumask_any_and(&data->affinity, + cpu_online_mask); irq_affinity_online[irq] = new; CROSS_GxICR(irq, new) = @@ -459,7 +344,7 @@ void migrate_irqs(void) tmp = CROSS_GxICR(irq, new); x &= GxICR_LEVEL | GxICR_ENABLE; - if (GxICR(irq) & GxICR_REQUEST) { + if (GxICR(irq) & GxICR_REQUEST) x |= GxICR_REQUEST | GxICR_DETECT; CROSS_GxICR(irq, new) = x; tmp = CROSS_GxICR(irq, new); diff --git a/arch/mn10300/kernel/kernel_execve.S b/arch/mn10300/kernel/kernel_execve.S deleted file mode 100644 index 86039f10526..00000000000 --- a/arch/mn10300/kernel/kernel_execve.S +++ /dev/null @@ -1,37 +0,0 @@ -/* MN10300 In-kernel program execution - * - * Copyright (C) 2007 Red Hat, Inc. All Rights Reserved. - * Written by David Howells (dhowells@redhat.com) - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public Licence - * as published by the Free Software Foundation; either version - * 2 of the Licence, or (at your option) any later version. - */ -#include <linux/linkage.h> -#include <asm/unistd.h> - -############################################################################### -# -# Do a system call from kernel instead of calling sys_execve so we end up with -# proper pt_regs. -# -# int kernel_execve(const char *filename, char *const argv[], -# char *const envp[]) -# -# On entry: D0/D1/8(SP): arguments to function -# On return: D0: syscall return. -# -############################################################################### - .globl kernel_execve - .type kernel_execve,@function -kernel_execve: - mov a3,a1 - mov d0,a0 - mov (12,sp),a3 - mov +__NR_execve,d0 - syscall 0 - mov a1,a3 - rets - - .size kernel_execve,.-kernel_execve diff --git a/arch/mn10300/kernel/kgdb.c b/arch/mn10300/kernel/kgdb.c new file mode 100644 index 00000000000..99770823451 --- /dev/null +++ b/arch/mn10300/kernel/kgdb.c @@ -0,0 +1,501 @@ +/* kgdb support for MN10300 + * + * Copyright (C) 2010 Red Hat, Inc. All Rights Reserved. + * Written by David Howells (dhowells@redhat.com) + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public Licence + * as published by the Free Software Foundation; either version + * 2 of the Licence, or (at your option) any later version. + */ + +#include <linux/slab.h> +#include <linux/ptrace.h> +#include <linux/kgdb.h> +#include <linux/uaccess.h> +#include <unit/leds.h> +#include <unit/serial.h> +#include <asm/debugger.h> +#include <asm/serial-regs.h> +#include "internal.h" + +/* + * Software single-stepping breakpoint save (used by __switch_to()) + */ +static struct thread_info *kgdb_sstep_thread; +u8 *kgdb_sstep_bp_addr[2]; +u8 kgdb_sstep_bp[2]; + +/* + * Copy kernel exception frame registers to the GDB register file + */ +void pt_regs_to_gdb_regs(unsigned long *gdb_regs, struct pt_regs *regs) +{ + unsigned long ssp = (unsigned long) (regs + 1); + + gdb_regs[GDB_FR_D0] = regs->d0; + gdb_regs[GDB_FR_D1] = regs->d1; + gdb_regs[GDB_FR_D2] = regs->d2; + gdb_regs[GDB_FR_D3] = regs->d3; + gdb_regs[GDB_FR_A0] = regs->a0; + gdb_regs[GDB_FR_A1] = regs->a1; + gdb_regs[GDB_FR_A2] = regs->a2; + gdb_regs[GDB_FR_A3] = regs->a3; + gdb_regs[GDB_FR_SP] = (regs->epsw & EPSW_nSL) ? regs->sp : ssp; + gdb_regs[GDB_FR_PC] = regs->pc; + gdb_regs[GDB_FR_MDR] = regs->mdr; + gdb_regs[GDB_FR_EPSW] = regs->epsw; + gdb_regs[GDB_FR_LIR] = regs->lir; + gdb_regs[GDB_FR_LAR] = regs->lar; + gdb_regs[GDB_FR_MDRQ] = regs->mdrq; + gdb_regs[GDB_FR_E0] = regs->e0; + gdb_regs[GDB_FR_E1] = regs->e1; + gdb_regs[GDB_FR_E2] = regs->e2; + gdb_regs[GDB_FR_E3] = regs->e3; + gdb_regs[GDB_FR_E4] = regs->e4; + gdb_regs[GDB_FR_E5] = regs->e5; + gdb_regs[GDB_FR_E6] = regs->e6; + gdb_regs[GDB_FR_E7] = regs->e7; + gdb_regs[GDB_FR_SSP] = ssp; + gdb_regs[GDB_FR_MSP] = 0; + gdb_regs[GDB_FR_USP] = regs->sp; + gdb_regs[GDB_FR_MCRH] = regs->mcrh; + gdb_regs[GDB_FR_MCRL] = regs->mcrl; + gdb_regs[GDB_FR_MCVF] = regs->mcvf; + gdb_regs[GDB_FR_DUMMY0] = 0; + gdb_regs[GDB_FR_DUMMY1] = 0; + gdb_regs[GDB_FR_FS0] = 0; +} + +/* + * Extracts kernel SP/PC values understandable by gdb from the values + * saved by switch_to(). + */ +void sleeping_thread_to_gdb_regs(unsigned long *gdb_regs, struct task_struct *p) +{ + gdb_regs[GDB_FR_SSP] = p->thread.sp; + gdb_regs[GDB_FR_PC] = p->thread.pc; + gdb_regs[GDB_FR_A3] = p->thread.a3; + gdb_regs[GDB_FR_USP] = p->thread.usp; + gdb_regs[GDB_FR_FPCR] = p->thread.fpu_state.fpcr; +} + +/* + * Fill kernel exception frame registers from the GDB register file + */ +void gdb_regs_to_pt_regs(unsigned long *gdb_regs, struct pt_regs *regs) +{ + regs->d0 = gdb_regs[GDB_FR_D0]; + regs->d1 = gdb_regs[GDB_FR_D1]; + regs->d2 = gdb_regs[GDB_FR_D2]; + regs->d3 = gdb_regs[GDB_FR_D3]; + regs->a0 = gdb_regs[GDB_FR_A0]; + regs->a1 = gdb_regs[GDB_FR_A1]; + regs->a2 = gdb_regs[GDB_FR_A2]; + regs->a3 = gdb_regs[GDB_FR_A3]; + regs->sp = gdb_regs[GDB_FR_SP]; + regs->pc = gdb_regs[GDB_FR_PC]; + regs->mdr = gdb_regs[GDB_FR_MDR]; + regs->epsw = gdb_regs[GDB_FR_EPSW]; + regs->lir = gdb_regs[GDB_FR_LIR]; + regs->lar = gdb_regs[GDB_FR_LAR]; + regs->mdrq = gdb_regs[GDB_FR_MDRQ]; + regs->e0 = gdb_regs[GDB_FR_E0]; + regs->e1 = gdb_regs[GDB_FR_E1]; + regs->e2 = gdb_regs[GDB_FR_E2]; + regs->e3 = gdb_regs[GDB_FR_E3]; + regs->e4 = gdb_regs[GDB_FR_E4]; + regs->e5 = gdb_regs[GDB_FR_E5]; + regs->e6 = gdb_regs[GDB_FR_E6]; + regs->e7 = gdb_regs[GDB_FR_E7]; + regs->sp = gdb_regs[GDB_FR_SSP]; + /* gdb_regs[GDB_FR_MSP]; */ + // regs->usp = gdb_regs[GDB_FR_USP]; + regs->mcrh = gdb_regs[GDB_FR_MCRH]; + regs->mcrl = gdb_regs[GDB_FR_MCRL]; + regs->mcvf = gdb_regs[GDB_FR_MCVF]; + /* gdb_regs[GDB_FR_DUMMY0]; */ + /* gdb_regs[GDB_FR_DUMMY1]; */ + + // regs->fpcr = gdb_regs[GDB_FR_FPCR]; + // regs->fs0 = gdb_regs[GDB_FR_FS0]; +} + +struct kgdb_arch arch_kgdb_ops = { + .gdb_bpt_instr = { 0xff }, + .flags = KGDB_HW_BREAKPOINT, +}; + +static const unsigned char mn10300_kgdb_insn_sizes[256] = +{ + /* 1 2 3 4 5 6 7 8 9 a b c d e f */ + 1, 3, 3, 3, 1, 3, 3, 3, 1, 3, 3, 3, 1, 3, 3, 3, /* 0 */ + 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, /* 1 */ + 2, 2, 2, 2, 3, 3, 3, 3, 2, 2, 2, 2, 3, 3, 3, 3, /* 2 */ + 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, /* 3 */ + 1, 1, 2, 2, 1, 1, 2, 2, 1, 1, 2, 2, 1, 1, 2, 2, /* 4 */ + 1, 1, 1, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 2, 2, 2, /* 5 */ + 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, /* 6 */ + 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, /* 7 */ + 2, 1, 1, 1, 1, 2, 1, 1, 1, 1, 2, 1, 1, 1, 1, 2, /* 8 */ + 2, 1, 1, 1, 1, 2, 1, 1, 1, 1, 2, 1, 1, 1, 1, 2, /* 9 */ + 2, 1, 1, 1, 1, 2, 1, 1, 1, 1, 2, 1, 1, 1, 1, 2, /* a */ + 2, 1, 1, 1, 1, 2, 1, 1, 1, 1, 2, 1, 1, 1, 1, 2, /* b */ + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 2, 2, /* c */ + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* d */ + 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, /* e */ + 0, 2, 2, 2, 2, 2, 2, 4, 0, 3, 0, 4, 0, 6, 7, 1 /* f */ +}; + +/* + * Attempt to emulate single stepping by means of breakpoint instructions. + * Although there is a single-step trace flag in EPSW, its use is not + * sufficiently documented and is only intended for use with the JTAG debugger. + */ +static int kgdb_arch_do_singlestep(struct pt_regs *regs) +{ + unsigned long arg; + unsigned size; + u8 *pc = (u8 *)regs->pc, *sp = (u8 *)(regs + 1), cur; + u8 *x = NULL, *y = NULL; + int ret; + + ret = probe_kernel_read(&cur, pc, 1); + if (ret < 0) + return ret; + + size = mn10300_kgdb_insn_sizes[cur]; + if (size > 0) { + x = pc + size; + goto set_x; + } + + switch (cur) { + /* Bxx (d8,PC) */ + case 0xc0 ... 0xca: + ret = probe_kernel_read(&arg, pc + 1, 1); + if (ret < 0) + return ret; + x = pc + 2; + if (arg >= 0 && arg <= 2) + goto set_x; + y = pc + (s8)arg; + goto set_x_and_y; + + /* LXX (d8,PC) */ + case 0xd0 ... 0xda: + x = pc + 1; + if (regs->pc == regs->lar) + goto set_x; + y = (u8 *)regs->lar; + goto set_x_and_y; + + /* SETLB - loads the next four bytes into the LIR register + * (which mustn't include a breakpoint instruction) */ + case 0xdb: + x = pc + 5; + goto set_x; + + /* JMP (d16,PC) or CALL (d16,PC) */ + case 0xcc: + case 0xcd: + ret = probe_kernel_read(&arg, pc + 1, 2); + if (ret < 0) + return ret; + x = pc + (s16)arg; + goto set_x; + + /* JMP (d32,PC) or CALL (d32,PC) */ + case 0xdc: + case 0xdd: + ret = probe_kernel_read(&arg, pc + 1, 4); + if (ret < 0) + return ret; + x = pc + (s32)arg; + goto set_x; + + /* RETF */ + case 0xde: + x = (u8 *)regs->mdr; + goto set_x; + + /* RET */ + case 0xdf: + ret = probe_kernel_read(&arg, pc + 2, 1); + if (ret < 0) + return ret; + ret = probe_kernel_read(&x, sp + (s8)arg, 4); + if (ret < 0) + return ret; + goto set_x; + + case 0xf0: + ret = probe_kernel_read(&cur, pc + 1, 1); + if (ret < 0) + return ret; + + if (cur >= 0xf0 && cur <= 0xf7) { + /* JMP (An) / CALLS (An) */ + switch (cur & 3) { + case 0: x = (u8 *)regs->a0; break; + case 1: x = (u8 *)regs->a1; break; + case 2: x = (u8 *)regs->a2; break; + case 3: x = (u8 *)regs->a3; break; + } + goto set_x; + } else if (cur == 0xfc) { + /* RETS */ + ret = probe_kernel_read(&x, sp, 4); + if (ret < 0) + return ret; + goto set_x; + } else if (cur == 0xfd) { + /* RTI */ + ret = probe_kernel_read(&x, sp + 4, 4); + if (ret < 0) + return ret; + goto set_x; + } else { + x = pc + 2; + goto set_x; + } + break; + + /* potential 3-byte conditional branches */ + case 0xf8: + ret = probe_kernel_read(&cur, pc + 1, 1); + if (ret < 0) + return ret; + x = pc + 3; + + if (cur >= 0xe8 && cur <= 0xeb) { + ret = probe_kernel_read(&arg, pc + 2, 1); + if (ret < 0) + return ret; + if (arg >= 0 && arg <= 3) + goto set_x; + y = pc + (s8)arg; + goto set_x_and_y; + } + goto set_x; + + case 0xfa: + ret = probe_kernel_read(&cur, pc + 1, 1); + if (ret < 0) + return ret; + + if (cur == 0xff) { + /* CALLS (d16,PC) */ + ret = probe_kernel_read(&arg, pc + 2, 2); + if (ret < 0) + return ret; + x = pc + (s16)arg; + goto set_x; + } + + x = pc + 4; + goto set_x; + + case 0xfc: + ret = probe_kernel_read(&cur, pc + 1, 1); + if (ret < 0) + return ret; + + if (cur == 0xff) { + /* CALLS (d32,PC) */ + ret = probe_kernel_read(&arg, pc + 2, 4); + if (ret < 0) + return ret; + x = pc + (s32)arg; + goto set_x; + } + + x = pc + 6; + goto set_x; + } + + return 0; + +set_x: + kgdb_sstep_bp_addr[0] = x; + kgdb_sstep_bp_addr[1] = NULL; + ret = probe_kernel_read(&kgdb_sstep_bp[0], x, 1); + if (ret < 0) + return ret; + ret = probe_kernel_write(x, &arch_kgdb_ops.gdb_bpt_instr, 1); + if (ret < 0) + return ret; + kgdb_sstep_thread = current_thread_info(); + debugger_local_cache_flushinv_one(x); + return ret; + +set_x_and_y: + kgdb_sstep_bp_addr[0] = x; + kgdb_sstep_bp_addr[1] = y; + ret = probe_kernel_read(&kgdb_sstep_bp[0], x, 1); + if (ret < 0) + return ret; + ret = probe_kernel_read(&kgdb_sstep_bp[1], y, 1); + if (ret < 0) + return ret; + ret = probe_kernel_write(x, &arch_kgdb_ops.gdb_bpt_instr, 1); + if (ret < 0) + return ret; + ret = probe_kernel_write(y, &arch_kgdb_ops.gdb_bpt_instr, 1); + if (ret < 0) { + probe_kernel_write(kgdb_sstep_bp_addr[0], + &kgdb_sstep_bp[0], 1); + } else { + kgdb_sstep_thread = current_thread_info(); + } + debugger_local_cache_flushinv_one(x); + debugger_local_cache_flushinv_one(y); + return ret; +} + +/* + * Remove emplaced single-step breakpoints, returning true if we hit one of + * them. + */ +static bool kgdb_arch_undo_singlestep(struct pt_regs *regs) +{ + bool hit = false; + u8 *x = kgdb_sstep_bp_addr[0], *y = kgdb_sstep_bp_addr[1]; + u8 opcode; + + if (kgdb_sstep_thread == current_thread_info()) { + if (x) { + if (x == (u8 *)regs->pc) + hit = true; + if (probe_kernel_read(&opcode, x, + 1) < 0 || + opcode != 0xff) + BUG(); + probe_kernel_write(x, &kgdb_sstep_bp[0], 1); + debugger_local_cache_flushinv_one(x); + } + if (y) { + if (y == (u8 *)regs->pc) + hit = true; + if (probe_kernel_read(&opcode, y, + 1) < 0 || + opcode != 0xff) + BUG(); + probe_kernel_write(y, &kgdb_sstep_bp[1], 1); + debugger_local_cache_flushinv_one(y); + } + } + + kgdb_sstep_bp_addr[0] = NULL; + kgdb_sstep_bp_addr[1] = NULL; + kgdb_sstep_thread = NULL; + return hit; +} + +/* + * Catch a single-step-pending thread being deleted and make sure the global + * single-step state is cleared. At this point the breakpoints should have + * been removed by __switch_to(). + */ +void arch_release_thread_info(struct thread_info *ti) +{ + if (kgdb_sstep_thread == ti) { + kgdb_sstep_thread = NULL; + + /* However, we may now be running in degraded mode, with most + * of the CPUs disabled until such a time as KGDB is reentered, + * so force immediate reentry */ + kgdb_breakpoint(); + } +} + +/* + * Handle unknown packets and [CcsDk] packets + * - at this point breakpoints have been installed + */ +int kgdb_arch_handle_exception(int vector, int signo, int err_code, + char *remcom_in_buffer, char *remcom_out_buffer, + struct pt_regs *regs) +{ + long addr; + char *ptr; + + switch (remcom_in_buffer[0]) { + case 'c': + case 's': + /* try to read optional parameter, pc unchanged if no parm */ + ptr = &remcom_in_buffer[1]; + if (kgdb_hex2long(&ptr, &addr)) + regs->pc = addr; + case 'D': + case 'k': + atomic_set(&kgdb_cpu_doing_single_step, -1); + + if (remcom_in_buffer[0] == 's') { + kgdb_arch_do_singlestep(regs); + kgdb_single_step = 1; + atomic_set(&kgdb_cpu_doing_single_step, + raw_smp_processor_id()); + } + return 0; + } + return -1; /* this means that we do not want to exit from the handler */ +} + +/* + * Handle event interception + * - returns 0 if the exception should be skipped, -ERROR otherwise. + */ +int debugger_intercept(enum exception_code excep, int signo, int si_code, + struct pt_regs *regs) +{ + int ret; + + if (kgdb_arch_undo_singlestep(regs)) { + excep = EXCEP_TRAP; + signo = SIGTRAP; + si_code = TRAP_TRACE; + } + + ret = kgdb_handle_exception(excep, signo, si_code, regs); + + debugger_local_cache_flushinv(); + + return ret; +} + +/* + * Determine if we've hit a debugger special breakpoint + */ +int at_debugger_breakpoint(struct pt_regs *regs) +{ + return regs->pc == (unsigned long)&__arch_kgdb_breakpoint; +} + +/* + * Initialise kgdb + */ +int kgdb_arch_init(void) +{ + return 0; +} + +/* + * Do something, perhaps, but don't know what. + */ +void kgdb_arch_exit(void) +{ +} + +#ifdef CONFIG_SMP +void debugger_nmi_interrupt(struct pt_regs *regs, enum exception_code code) +{ + kgdb_nmicallback(arch_smp_processor_id(), regs); + debugger_local_cache_flushinv(); +} + +void kgdb_roundup_cpus(unsigned long flags) +{ + smp_jump_to_debugger(); +} +#endif diff --git a/arch/mn10300/kernel/kthread.S b/arch/mn10300/kernel/kthread.S deleted file mode 100644 index b5ae467ac5e..00000000000 --- a/arch/mn10300/kernel/kthread.S +++ /dev/null @@ -1,31 +0,0 @@ -/* MN10300 Kernel thread trampoline function - * - * Copyright (C) 2007 Red Hat, Inc. All Rights Reserved. - * Written by Mark Salter (msalter@redhat.com) - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public Licence - * as published by the Free Software Foundation; either version - * 2 of the Licence, or (at your option) any later version. - */ - .text - -############################################################################### -# -# kernel_thread_helper - trampoline for kernel_thread() -# -# On entry: -# A2 = address of function to call -# D2 = function argument -# -############################################################################### - .globl kernel_thread_helper - .type kernel_thread_helper,@function -kernel_thread_helper: - mov do_exit,d1 - mov d1,(sp) - mov d1,mdr - mov d2,d0 - jmp (a2) - - .size kernel_thread_helper,.-kernel_thread_helper diff --git a/arch/mn10300/kernel/mn10300-serial-low.S b/arch/mn10300/kernel/mn10300-serial-low.S index dfc1b6f2fa9..b95e76caf4f 100644 --- a/arch/mn10300/kernel/mn10300-serial-low.S +++ b/arch/mn10300/kernel/mn10300-serial-low.S @@ -118,8 +118,8 @@ ENTRY(mn10300_serial_vdma_tx_handler) movbu d2,(e3) # ACK the interrupt movhu (e3),d2 # flush - btst 0x01,(__tx_break,a3) # handle transmit break request - bne mnsc_vdma_tx_break + btst 0xFF,(__tx_flags,a3) # handle transmit flags + bne mnsc_vdma_tx_flags movbu (SCxSTR,e2),d2 # don't try and transmit a char if the # buffer is not empty @@ -171,10 +171,13 @@ mnsc_vdma_tx_empty: bset MNSCx_TX_EMPTY,(__intr_flags,a3) bra mnsc_vdma_tx_done -mnsc_vdma_tx_break: +mnsc_vdma_tx_flags: + btst MNSCx_TX_STOP,(__tx_flags,a3) + bne mnsc_vdma_tx_stop movhu (SCxCTR,e2),d2 # turn on break mode or SC01CTR_BKE,d2 movhu d2,(SCxCTR,e2) +mnsc_vdma_tx_stop: mov +(NUM2GxICR_LEVEL(CONFIG_MN10300_SERIAL_IRQ_LEVEL)|GxICR_DETECT),d2 movhu d2,(e3) # disable transmit interrupts on this # channel diff --git a/arch/mn10300/kernel/mn10300-serial.c b/arch/mn10300/kernel/mn10300-serial.c index 996384dba45..7ecf69879e2 100644 --- a/arch/mn10300/kernel/mn10300-serial.c +++ b/arch/mn10300/kernel/mn10300-serial.c @@ -36,7 +36,6 @@ static const char serial_revdate[] = "2007-11-06"; #include <linux/console.h> #include <linux/sysrq.h> -#include <asm/system.h> #include <asm/io.h> #include <asm/irq.h> #include <asm/bitops.h> @@ -119,6 +118,10 @@ static int mn10300_serial_request_port(struct uart_port *); static void mn10300_serial_config_port(struct uart_port *, int); static int mn10300_serial_verify_port(struct uart_port *, struct serial_struct *); +#ifdef CONFIG_CONSOLE_POLL +static void mn10300_serial_poll_put_char(struct uart_port *, unsigned char); +static int mn10300_serial_poll_get_char(struct uart_port *); +#endif static const struct uart_ops mn10300_serial_ops = { .tx_empty = mn10300_serial_tx_empty, @@ -138,6 +141,10 @@ static const struct uart_ops mn10300_serial_ops = { .request_port = mn10300_serial_request_port, .config_port = mn10300_serial_config_port, .verify_port = mn10300_serial_verify_port, +#ifdef CONFIG_CONSOLE_POLL + .poll_put_char = mn10300_serial_poll_put_char, + .poll_get_char = mn10300_serial_poll_get_char, +#endif }; static irqreturn_t mn10300_serial_interrupt(int irq, void *dev_id); @@ -384,19 +391,51 @@ static void mn10300_serial_mask_ack(unsigned int irq) arch_local_irq_restore(flags); } -static void mn10300_serial_nop(unsigned int irq) +static void mn10300_serial_chip_mask_ack(struct irq_data *d) +{ + mn10300_serial_mask_ack(d->irq); +} + +static void mn10300_serial_nop(struct irq_data *d) { } static struct irq_chip mn10300_serial_pic = { .name = "mnserial", - .ack = mn10300_serial_mask_ack, - .mask = mn10300_serial_mask_ack, - .mask_ack = mn10300_serial_mask_ack, - .unmask = mn10300_serial_nop, - .end = mn10300_serial_nop, + .irq_ack = mn10300_serial_chip_mask_ack, + .irq_mask = mn10300_serial_chip_mask_ack, + .irq_mask_ack = mn10300_serial_chip_mask_ack, + .irq_unmask = mn10300_serial_nop, }; +static void mn10300_serial_low_mask(struct irq_data *d) +{ + unsigned long flags; + u16 tmp; + + flags = arch_local_cli_save(); + GxICR(d->irq) = NUM2GxICR_LEVEL(CONFIG_MN10300_SERIAL_IRQ_LEVEL); + tmp = GxICR(d->irq); /* flush write buffer */ + arch_local_irq_restore(flags); +} + +static void mn10300_serial_low_unmask(struct irq_data *d) +{ + unsigned long flags; + u16 tmp; + + flags = arch_local_cli_save(); + GxICR(d->irq) = + NUM2GxICR_LEVEL(CONFIG_MN10300_SERIAL_IRQ_LEVEL) | GxICR_ENABLE; + tmp = GxICR(d->irq); /* flush write buffer */ + arch_local_irq_restore(flags); +} + +static struct irq_chip mn10300_serial_low_pic = { + .name = "mnserial-low", + .irq_mask = mn10300_serial_low_mask, + .irq_unmask = mn10300_serial_low_unmask, +}; /* * serial virtual DMA interrupt jump table @@ -405,25 +444,53 @@ struct mn10300_serial_int mn10300_serial_int_tbl[NR_IRQS]; static void mn10300_serial_dis_tx_intr(struct mn10300_serial_port *port) { - unsigned long flags; + int retries = 100; u16 x; - flags = arch_local_cli_save(); - *port->tx_icr = NUM2GxICR_LEVEL(CONFIG_MN10300_SERIAL_IRQ_LEVEL); - x = *port->tx_icr; - arch_local_irq_restore(flags); + /* nothing to do if irq isn't set up */ + if (!mn10300_serial_int_tbl[port->tx_irq].port) + return; + + port->tx_flags |= MNSCx_TX_STOP; + mb(); + + /* + * Here we wait for the irq to be disabled. Either it already is + * disabled or we wait some number of retries for the VDMA handler + * to disable it. The retries give the VDMA handler enough time to + * run to completion if it was already in progress. If the VDMA IRQ + * is enabled but the handler is not yet running when arrive here, + * the STOP flag will prevent the handler from conflicting with the + * driver code following this loop. + */ + while ((*port->tx_icr & GxICR_ENABLE) && retries-- > 0) + ; + if (retries <= 0) { + *port->tx_icr = + NUM2GxICR_LEVEL(CONFIG_MN10300_SERIAL_IRQ_LEVEL); + x = *port->tx_icr; + } } static void mn10300_serial_en_tx_intr(struct mn10300_serial_port *port) { - unsigned long flags; u16 x; - flags = arch_local_cli_save(); + /* nothing to do if irq isn't set up */ + if (!mn10300_serial_int_tbl[port->tx_irq].port) + return; + + /* stop vdma irq if not already stopped */ + if (!(port->tx_flags & MNSCx_TX_STOP)) + mn10300_serial_dis_tx_intr(port); + + port->tx_flags &= ~MNSCx_TX_STOP; + mb(); + *port->tx_icr = - NUM2GxICR_LEVEL(CONFIG_MN10300_SERIAL_IRQ_LEVEL) | GxICR_ENABLE; + NUM2GxICR_LEVEL(CONFIG_MN10300_SERIAL_IRQ_LEVEL) | + GxICR_ENABLE | GxICR_REQUEST | GxICR_DETECT; x = *port->tx_icr; - arch_local_irq_restore(flags); } static void mn10300_serial_dis_rx_intr(struct mn10300_serial_port *port) @@ -457,7 +524,7 @@ static int mask_test_and_clear(volatile u8 *ptr, u8 mask) static void mn10300_serial_receive_interrupt(struct mn10300_serial_port *port) { struct uart_icount *icount = &port->uart.icount; - struct tty_struct *tty = port->uart.state->port.tty; + struct tty_port *tport = &port->uart.state->port; unsigned ix; int count; u8 st, ch, push, status, overrun; @@ -467,25 +534,26 @@ static void mn10300_serial_receive_interrupt(struct mn10300_serial_port *port) push = 0; count = CIRC_CNT(port->rx_inp, port->rx_outp, MNSC_BUFFER_SIZE); - count = tty_buffer_request_room(tty, count); + count = tty_buffer_request_room(tport, count); if (count == 0) { - if (!tty->low_latency) - tty_flip_buffer_push(tty); + if (!tport->low_latency) + tty_flip_buffer_push(tport); return; } try_again: /* pull chars out of the hat */ - ix = port->rx_outp; - if (ix == port->rx_inp) { - if (push && !tty->low_latency) - tty_flip_buffer_push(tty); + ix = ACCESS_ONCE(port->rx_outp); + if (CIRC_CNT(port->rx_inp, ix, MNSC_BUFFER_SIZE) == 0) { + if (push && !tport->low_latency) + tty_flip_buffer_push(tport); return; } + smp_read_barrier_depends(); ch = port->rx_buffer[ix++]; st = port->rx_buffer[ix++]; - smp_rmb(); + smp_mb(); port->rx_outp = ix & (MNSC_BUFFER_SIZE - 1); port->uart.icount.rx++; @@ -598,19 +666,19 @@ insert: else flag = TTY_NORMAL; - tty_insert_flip_char(tty, ch, flag); + tty_insert_flip_char(tport, ch, flag); } /* overrun is special, since it's reported immediately, and doesn't * affect the current character */ if (overrun) - tty_insert_flip_char(tty, 0, TTY_OVERRUN); + tty_insert_flip_char(tport, 0, TTY_OVERRUN); count--; if (count <= 0) { - if (!tty->low_latency) - tty_flip_buffer_push(tty); + if (!tport->low_latency) + tty_flip_buffer_push(tport); return; } @@ -767,8 +835,6 @@ static void mn10300_serial_start_tx(struct uart_port *_port) struct mn10300_serial_port *port = container_of(_port, struct mn10300_serial_port, uart); - u16 x; - _enter("%s{%lu}", port->name, CIRC_CNT(&port->uart.state->xmit.head, @@ -776,14 +842,7 @@ static void mn10300_serial_start_tx(struct uart_port *_port) UART_XMIT_SIZE)); /* kick the virtual DMA controller */ - arch_local_cli(); - x = *port->tx_icr; - x |= GxICR_ENABLE; - - if (*port->_status & SC01STR_TBF) - x &= ~(GxICR_REQUEST | GxICR_DETECT); - else - x |= GxICR_REQUEST | GxICR_DETECT; + mn10300_serial_en_tx_intr(port); _debug("CTR=%04hx ICR=%02hx STR=%04x TMD=%02hx TBR=%04hx ICR=%04hx", *port->_control, *port->_intr, *port->_status, @@ -791,10 +850,6 @@ static void mn10300_serial_start_tx(struct uart_port *_port) (port->div_timer == MNSCx_DIV_TIMER_8BIT) ? *(volatile u8 *)port->_tmxbr : *port->_tmxbr, *port->tx_icr); - - *port->tx_icr = x; - x = *port->tx_icr; - arch_local_sti(); } /* @@ -804,13 +859,17 @@ static void mn10300_serial_send_xchar(struct uart_port *_port, char ch) { struct mn10300_serial_port *port = container_of(_port, struct mn10300_serial_port, uart); + unsigned long flags; _enter("%s,%02x", port->name, ch); if (likely(port->gdbstub)) { port->tx_xchar = ch; - if (ch) + if (ch) { + spin_lock_irqsave(&port->uart.lock, flags); mn10300_serial_en_tx_intr(port); + spin_unlock_irqrestore(&port->uart.lock, flags); + } } } @@ -871,18 +930,21 @@ static void mn10300_serial_break_ctl(struct uart_port *_port, int ctl) { struct mn10300_serial_port *port = container_of(_port, struct mn10300_serial_port, uart); + unsigned long flags; _enter("%s,%d", port->name, ctl); + spin_lock_irqsave(&port->uart.lock, flags); if (ctl) { /* tell the virtual DMA handler to assert BREAK */ - port->tx_break = 1; + port->tx_flags |= MNSCx_TX_BREAK; mn10300_serial_en_tx_intr(port); } else { - port->tx_break = 0; + port->tx_flags &= ~MNSCx_TX_BREAK; *port->_control &= ~SC01CTR_BKE; mn10300_serial_en_tx_intr(port); } + spin_unlock_irqrestore(&port->uart.lock, flags); } /* @@ -905,6 +967,7 @@ static int mn10300_serial_startup(struct uart_port *_port) return -ENOMEM; port->rx_inp = port->rx_outp = 0; + port->tx_flags = 0; /* finally, enable the device */ *port->_intr = SC01ICR_TI; @@ -917,22 +980,23 @@ static int mn10300_serial_startup(struct uart_port *_port) pint->port = port; pint->vdma = mn10300_serial_vdma_tx_handler; - set_intr_level(port->rx_irq, - NUM2GxICR_LEVEL(CONFIG_MN10300_SERIAL_IRQ_LEVEL)); - set_intr_level(port->tx_irq, - NUM2GxICR_LEVEL(CONFIG_MN10300_SERIAL_IRQ_LEVEL)); - set_irq_chip(port->tm_irq, &mn10300_serial_pic); + irq_set_chip(port->rx_irq, &mn10300_serial_low_pic); + irq_set_chip(port->tx_irq, &mn10300_serial_low_pic); + irq_set_chip(port->tm_irq, &mn10300_serial_pic); if (request_irq(port->rx_irq, mn10300_serial_interrupt, - IRQF_DISABLED, port->rx_name, port) < 0) + IRQF_NOBALANCING, + port->rx_name, port) < 0) goto error; if (request_irq(port->tx_irq, mn10300_serial_interrupt, - IRQF_DISABLED, port->tx_name, port) < 0) + IRQF_NOBALANCING, + port->tx_name, port) < 0) goto error2; if (request_irq(port->tm_irq, mn10300_serial_interrupt, - IRQF_DISABLED, port->tm_name, port) < 0) + IRQF_NOBALANCING, + port->tm_name, port) < 0) goto error3; mn10300_serial_mask_ack(port->tm_irq); @@ -953,14 +1017,22 @@ error: */ static void mn10300_serial_shutdown(struct uart_port *_port) { + unsigned long flags; u16 x; struct mn10300_serial_port *port = container_of(_port, struct mn10300_serial_port, uart); _enter("%s", port->name); + spin_lock_irqsave(&_port->lock, flags); + mn10300_serial_dis_tx_intr(port); + + *port->rx_icr = NUM2GxICR_LEVEL(CONFIG_MN10300_SERIAL_IRQ_LEVEL); + x = *port->rx_icr; + port->tx_flags = 0; + spin_unlock_irqrestore(&_port->lock, flags); + /* disable the serial port and its baud rate timer */ - port->tx_break = 0; *port->_control &= ~(SC01CTR_TXE | SC01CTR_RXE | SC01CTR_BKE); *port->_tmxmd = 0; @@ -975,12 +1047,8 @@ static void mn10300_serial_shutdown(struct uart_port *_port) free_irq(port->rx_irq, port); free_irq(port->tx_irq, port); - arch_local_cli(); - *port->rx_icr = NUM2GxICR_LEVEL(CONFIG_MN10300_SERIAL_IRQ_LEVEL); - x = *port->rx_icr; - *port->tx_icr = NUM2GxICR_LEVEL(CONFIG_MN10300_SERIAL_IRQ_LEVEL); - x = *port->tx_icr; - arch_local_sti(); + mn10300_serial_int_tbl[port->tx_irq].port = NULL; + mn10300_serial_int_tbl[port->rx_irq].port = NULL; } /* @@ -1306,7 +1374,8 @@ timer_okay: if ((new->c_cflag & CREAD) == 0) port->uart.ignore_status_mask |= (1 << TTY_NORMAL); - scxctr |= *port->_control & (SC01CTR_TXE | SC01CTR_RXE | SC01CTR_BKE); + scxctr |= SC01CTR_TXE | SC01CTR_RXE; + scxctr |= *port->_control & SC01CTR_BKE; *port->_control = scxctr; spin_unlock_irqrestore(&port->uart.lock, flags); @@ -1508,17 +1577,24 @@ static void mn10300_serial_console_write(struct console *co, { struct mn10300_serial_port *port; unsigned i; - u16 scxctr, txicr, tmp; + u16 scxctr; u8 tmxmd; + unsigned long flags; + int locked = 1; port = mn10300_serial_ports[co->index]; + local_irq_save(flags); + if (port->uart.sysrq) { + /* mn10300_serial_interrupt() already took the lock */ + locked = 0; + } else if (oops_in_progress) { + locked = spin_trylock(&port->uart.lock); + } else + spin_lock(&port->uart.lock); + /* firstly hijack the serial port from the "virtual DMA" controller */ - arch_local_cli(); - txicr = *port->tx_icr; - *port->tx_icr = NUM2GxICR_LEVEL(CONFIG_MN10300_SERIAL_IRQ_LEVEL); - tmp = *port->tx_icr; - arch_local_sti(); + mn10300_serial_dis_tx_intr(port); /* the transmitter may be disabled */ scxctr = *port->_control; @@ -1554,12 +1630,12 @@ static void mn10300_serial_console_write(struct console *co, while (*port->_status & SC01STR_TBF) continue; - *(u8 *) port->_txb = ch; + *port->_txb = ch; if (ch == 0x0a) { while (*port->_status & SC01STR_TBF) continue; - *(u8 *) port->_txb = 0xd; + *port->_txb = 0xd; } } @@ -1572,10 +1648,11 @@ static void mn10300_serial_console_write(struct console *co, if (!(scxctr & SC01CTR_TXE)) *port->_control = scxctr; - arch_local_cli(); - *port->tx_icr = txicr; - tmp = *port->tx_icr; - arch_local_sti(); + mn10300_serial_en_tx_intr(port); + + if (locked) + spin_unlock(&port->uart.lock); + local_irq_restore(flags); } /* @@ -1630,3 +1707,81 @@ static int __init mn10300_serial_console_init(void) console_initcall(mn10300_serial_console_init); #endif + +#ifdef CONFIG_CONSOLE_POLL +/* + * Polled character reception for the kernel debugger + */ +static int mn10300_serial_poll_get_char(struct uart_port *_port) +{ + struct mn10300_serial_port *port = + container_of(_port, struct mn10300_serial_port, uart); + unsigned ix; + u8 st, ch; + + _enter("%s", port->name); + + if (mn10300_serial_int_tbl[port->rx_irq].port != NULL) { + do { + /* pull chars out of the hat */ + ix = ACCESS_ONCE(port->rx_outp); + if (CIRC_CNT(port->rx_inp, ix, MNSC_BUFFER_SIZE) == 0) + return NO_POLL_CHAR; + + smp_read_barrier_depends(); + ch = port->rx_buffer[ix++]; + st = port->rx_buffer[ix++]; + smp_mb(); + port->rx_outp = ix & (MNSC_BUFFER_SIZE - 1); + + } while (st & (SC01STR_FEF | SC01STR_PEF | SC01STR_OEF)); + } else { + do { + st = *port->_status; + if (st & (SC01STR_FEF | SC01STR_PEF | SC01STR_OEF)) + continue; + } while (!(st & SC01STR_RBF)); + + ch = *port->_rxb; + } + + return ch; +} + + +/* + * Polled character transmission for the kernel debugger + */ +static void mn10300_serial_poll_put_char(struct uart_port *_port, + unsigned char ch) +{ + struct mn10300_serial_port *port = + container_of(_port, struct mn10300_serial_port, uart); + u8 intr, tmp; + + /* wait for the transmitter to finish anything it might be doing (and + * this includes the virtual DMA handler, so it might take a while) */ + while (*port->_status & (SC01STR_TBF | SC01STR_TXF)) + continue; + + /* disable the Tx ready interrupt */ + intr = *port->_intr; + *port->_intr = intr & ~SC01ICR_TI; + tmp = *port->_intr; + + if (ch == 0x0a) { + *port->_txb = 0x0d; + while (*port->_status & SC01STR_TBF) + continue; + } + + *port->_txb = ch; + while (*port->_status & SC01STR_TBF) + continue; + + /* restore the Tx interrupt flag */ + *port->_intr = intr; + tmp = *port->_intr; +} + +#endif /* CONFIG_CONSOLE_POLL */ diff --git a/arch/mn10300/kernel/mn10300-serial.h b/arch/mn10300/kernel/mn10300-serial.h index 6796499bf78..01791c68ea1 100644 --- a/arch/mn10300/kernel/mn10300-serial.h +++ b/arch/mn10300/kernel/mn10300-serial.h @@ -29,6 +29,10 @@ #define MNSCx_TX_SPACE 0x04 #define MNSCx_TX_EMPTY 0x08 +/* tx_flags bits */ +#define MNSCx_TX_BREAK 0x01 +#define MNSCx_TX_STOP 0x02 + #ifndef __ASSEMBLY__ struct mn10300_serial_port { @@ -36,7 +40,7 @@ struct mn10300_serial_port { unsigned rx_inp; /* pointer to rx input offset */ unsigned rx_outp; /* pointer to rx output offset */ u8 tx_xchar; /* high-priority XON/XOFF buffer */ - u8 tx_break; /* transmit break request */ + u8 tx_flags; /* transmit break/stop request */ u8 intr_flags; /* interrupt flags */ volatile u16 *rx_icr; /* Rx interrupt control register */ volatile u16 *tx_icr; /* Tx interrupt control register */ @@ -54,8 +58,8 @@ struct mn10300_serial_port { volatile u16 *_control; /* control register pointer */ volatile u8 *_status; /* status register pointer */ volatile u8 *_intr; /* interrupt register pointer */ - volatile void *_rxb; /* receive buffer register pointer */ - volatile void *_txb; /* transmit buffer register pointer */ + volatile u8 *_rxb; /* receive buffer register pointer */ + volatile u8 *_txb; /* transmit buffer register pointer */ volatile u16 *_tmicr; /* timer interrupt control register */ volatile u8 *_tmxmd; /* baud rate timer mode register */ volatile u16 *_tmxbr; /* baud rate timer base register */ diff --git a/arch/mn10300/kernel/mn10300-watchdog.c b/arch/mn10300/kernel/mn10300-watchdog.c index c5e12bfd9fc..a2d8e6938d6 100644 --- a/arch/mn10300/kernel/mn10300-watchdog.c +++ b/arch/mn10300/kernel/mn10300-watchdog.c @@ -18,8 +18,7 @@ #include <linux/kernel_stat.h> #include <linux/nmi.h> #include <asm/processor.h> -#include <asm/system.h> -#include <asm/atomic.h> +#include <linux/atomic.h> #include <asm/intctl-regs.h> #include <asm/rtc-regs.h> #include <asm/div64.h> @@ -143,7 +142,7 @@ void watchdog_interrupt(struct pt_regs *regs, enum exception_code excep) NMICR = NMICR_WDIF; nmi_count(smp_processor_id())++; - kstat_incr_irqs_this_cpu(irq, irq_to_desc(irq)); + kstat_incr_irq_this_cpu(irq); for_each_online_cpu(cpu) { diff --git a/arch/mn10300/kernel/module.c b/arch/mn10300/kernel/module.c index 196a111e2e2..216ad23c957 100644 --- a/arch/mn10300/kernel/module.c +++ b/arch/mn10300/kernel/module.c @@ -32,36 +32,6 @@ #define DEBUGP(fmt, ...) #endif -/* - * allocate storage for a module - */ -void *module_alloc(unsigned long size) -{ - if (size == 0) - return NULL; - return vmalloc_exec(size); -} - -/* - * free memory returned from module_alloc() - */ -void module_free(struct module *mod, void *module_region) -{ - vfree(module_region); -} - -/* - * allow the arch to fix up the section table - * - we don't need anything special - */ -int module_frob_arch_sections(Elf_Ehdr *hdr, - Elf_Shdr *sechdrs, - char *secstrings, - struct module *mod) -{ - return 0; -} - static void reloc_put16(uint8_t *p, uint32_t val) { p[0] = val & 0xff; @@ -81,20 +51,6 @@ static void reloc_put32(uint8_t *p, uint32_t val) } /* - * apply a REL relocation - */ -int apply_relocate(Elf32_Shdr *sechdrs, - const char *strtab, - unsigned int symindex, - unsigned int relsec, - struct module *me) -{ - printk(KERN_ERR "module %s: RELOCATION unsupported\n", - me->name); - return -ENOEXEC; -} - -/* * apply a RELA relocation */ int apply_relocate_add(Elf32_Shdr *sechdrs, @@ -198,20 +154,3 @@ int apply_relocate_add(Elf32_Shdr *sechdrs, } return 0; } - -/* - * finish loading the module - */ -int module_finalize(const Elf_Ehdr *hdr, - const Elf_Shdr *sechdrs, - struct module *me) -{ - return 0; -} - -/* - * finish clearing the module - */ -void module_arch_cleanup(struct module *mod) -{ -} diff --git a/arch/mn10300/kernel/process.c b/arch/mn10300/kernel/process.c index 0d0f8049a17..3707da583d0 100644 --- a/arch/mn10300/kernel/process.c +++ b/arch/mn10300/kernel/process.c @@ -14,7 +14,6 @@ #include <linux/kernel.h> #include <linux/mm.h> #include <linux/smp.h> -#include <linux/smp_lock.h> #include <linux/stddef.h> #include <linux/unistd.h> #include <linux/ptrace.h> @@ -26,9 +25,9 @@ #include <linux/err.h> #include <linux/fs.h> #include <linux/slab.h> +#include <linux/rcupdate.h> #include <asm/uaccess.h> #include <asm/pgtable.h> -#include <asm/system.h> #include <asm/io.h> #include <asm/processor.h> #include <asm/mmu_context.h> @@ -38,12 +37,6 @@ #include "internal.h" /* - * power management idle function, if any.. - */ -void (*pm_idle)(void); -EXPORT_SYMBOL(pm_idle); - -/* * return saved PC of a blocked thread. */ unsigned long thread_saved_pc(struct task_struct *tsk) @@ -57,78 +50,19 @@ unsigned long thread_saved_pc(struct task_struct *tsk) void (*pm_power_off)(void); EXPORT_SYMBOL(pm_power_off); -#if !defined(CONFIG_SMP) || defined(CONFIG_HOTPLUG_CPU) -/* - * we use this if we don't have any better idle routine - */ -static void default_idle(void) -{ - local_irq_disable(); - if (!need_resched()) - safe_halt(); - else - local_irq_enable(); -} - -#else /* !CONFIG_SMP || CONFIG_HOTPLUG_CPU */ /* * On SMP it's slightly faster (but much more power-consuming!) * to poll the ->work.need_resched flag instead of waiting for the * cross-CPU IPI to arrive. Use this option with caution. + * + * tglx: No idea why this depends on HOTPLUG_CPU !?! */ -static inline void poll_idle(void) -{ - int oldval; - - local_irq_enable(); - - /* - * Deal with another CPU just having chosen a thread to - * run here: - */ - oldval = test_and_clear_thread_flag(TIF_NEED_RESCHED); - - if (!oldval) { - set_thread_flag(TIF_POLLING_NRFLAG); - while (!need_resched()) - cpu_relax(); - clear_thread_flag(TIF_POLLING_NRFLAG); - } else { - set_need_resched(); - } -} -#endif /* !CONFIG_SMP || CONFIG_HOTPLUG_CPU */ - -/* - * the idle thread - * - there's no useful work to be done, so just try to conserve power and have - * a low exit latency (ie sit in a loop waiting for somebody to say that - * they'd like to reschedule) - */ -void cpu_idle(void) +#if !defined(CONFIG_SMP) || defined(CONFIG_HOTPLUG_CPU) +void arch_cpu_idle(void) { - /* endless idle loop with no priority at all */ - for (;;) { - while (!need_resched()) { - void (*idle)(void); - - smp_rmb(); - idle = pm_idle; - if (!idle) { -#if defined(CONFIG_SMP) && !defined(CONFIG_HOTPLUG_CPU) - idle = poll_idle; -#else /* CONFIG_SMP && !CONFIG_HOTPLUG_CPU */ - idle = default_idle; -#endif /* CONFIG_SMP && !CONFIG_HOTPLUG_CPU */ - } - idle(); - } - - preempt_enable_no_resched(); - schedule(); - preempt_disable(); - } + safe_halt(); } +#endif void release_segments(struct mm_struct *mm) { @@ -136,7 +70,7 @@ void release_segments(struct mm_struct *mm) void machine_restart(char *cmd) { -#ifdef CONFIG_GDBSTUB +#ifdef CONFIG_KERNEL_DEBUGGER gdbstub_exit(0); #endif @@ -149,44 +83,24 @@ void machine_restart(char *cmd) void machine_halt(void) { -#ifdef CONFIG_GDBSTUB +#ifdef CONFIG_KERNEL_DEBUGGER gdbstub_exit(0); #endif } void machine_power_off(void) { -#ifdef CONFIG_GDBSTUB +#ifdef CONFIG_KERNEL_DEBUGGER gdbstub_exit(0); #endif } void show_regs(struct pt_regs *regs) { + show_regs_print_info(KERN_DEFAULT); } /* - * create a kernel thread - */ -int kernel_thread(int (*fn)(void *), void *arg, unsigned long flags) -{ - struct pt_regs regs; - - memset(®s, 0, sizeof(regs)); - - regs.a2 = (unsigned long) fn; - regs.d2 = (unsigned long) arg; - regs.pc = (unsigned long) kernel_thread_helper; - local_save_flags(regs.epsw); - regs.epsw |= EPSW_IE | EPSW_IM_7; - - /* Ok, create the new process.. */ - return do_fork(flags | CLONE_VM | CLONE_UNTRACED, 0, ®s, 0, - NULL, NULL); -} -EXPORT_SYMBOL(kernel_thread); - -/* * free current thread data structures etc.. */ void exit_thread(void) @@ -212,12 +126,14 @@ void copy_segments(struct task_struct *p, struct mm_struct *new_mm) } /* - * this gets called before we allocate a new thread and copy the current task - * into it so that we can store lazy state into memory + * this gets called so that we can store lazy state into memory and copy the + * current task into the new thread. */ -void prepare_to_copy(struct task_struct *tsk) +int arch_dup_task_struct(struct task_struct *dst, struct task_struct *src) { - unlazy_fpu(tsk); + unlazy_fpu(src); + *dst = *src; + return 0; } /* @@ -226,95 +142,48 @@ void prepare_to_copy(struct task_struct *tsk) */ int copy_thread(unsigned long clone_flags, unsigned long c_usp, unsigned long ustk_size, - struct task_struct *p, struct pt_regs *kregs) + struct task_struct *p) { struct thread_info *ti = task_thread_info(p); - struct pt_regs *c_uregs, *c_kregs, *uregs; + struct pt_regs *c_regs; unsigned long c_ksp; - uregs = current->thread.uregs; - c_ksp = (unsigned long) task_stack_page(p) + THREAD_SIZE; /* allocate the userspace exception frame and set it up */ c_ksp -= sizeof(struct pt_regs); - c_uregs = (struct pt_regs *) c_ksp; - - p->thread.uregs = c_uregs; - *c_uregs = *uregs; - c_uregs->sp = c_usp; - c_uregs->epsw &= ~EPSW_FE; /* my FPU */ - + c_regs = (struct pt_regs *) c_ksp; c_ksp -= 12; /* allocate function call ABI slack */ - /* the new TLS pointer is passed in as arg #5 to sys_clone() */ - if (clone_flags & CLONE_SETTLS) - c_uregs->e2 = current_frame()->d3; - - /* set up the return kernel frame if called from kernel_thread() */ - c_kregs = c_uregs; - if (kregs != uregs) { - c_ksp -= sizeof(struct pt_regs); - c_kregs = (struct pt_regs *) c_ksp; - *c_kregs = *kregs; - c_kregs->sp = c_usp; - c_kregs->next = c_uregs; -#ifdef CONFIG_MN10300_CURRENT_IN_E2 - c_kregs->e2 = (unsigned long) p; /* current */ -#endif - - c_ksp -= 12; /* allocate function call ABI slack */ - } - /* set up things up so the scheduler can start the new task */ - ti->frame = c_kregs; - p->thread.a3 = (unsigned long) c_kregs; + p->thread.uregs = c_regs; + ti->frame = c_regs; + p->thread.a3 = (unsigned long) c_regs; p->thread.sp = c_ksp; - p->thread.pc = (unsigned long) ret_from_fork; - p->thread.wchan = (unsigned long) ret_from_fork; + p->thread.wchan = p->thread.pc; p->thread.usp = c_usp; - return 0; -} - -/* - * clone a process - * - tlsptr is retrieved by copy_thread() from current_frame()->d3 - */ -asmlinkage long sys_clone(unsigned long clone_flags, unsigned long newsp, - int __user *parent_tidptr, int __user *child_tidptr, - int __user *tlsptr) -{ - return do_fork(clone_flags, newsp ?: current_frame()->sp, - current_frame(), 0, parent_tidptr, child_tidptr); -} - -asmlinkage long sys_fork(void) -{ - return do_fork(SIGCHLD, current_frame()->sp, - current_frame(), 0, NULL, NULL); -} + if (unlikely(p->flags & PF_KTHREAD)) { + memset(c_regs, 0, sizeof(struct pt_regs)); + c_regs->a0 = c_usp; /* function */ + c_regs->d0 = ustk_size; /* argument */ + local_save_flags(c_regs->epsw); + c_regs->epsw |= EPSW_IE | EPSW_IM_7; + p->thread.pc = (unsigned long) ret_from_kernel_thread; + return 0; + } + *c_regs = *current_pt_regs(); + if (c_usp) + c_regs->sp = c_usp; + c_regs->epsw &= ~EPSW_FE; /* my FPU */ -asmlinkage long sys_vfork(void) -{ - return do_fork(CLONE_VFORK | CLONE_VM | SIGCHLD, current_frame()->sp, - current_frame(), 0, NULL, NULL); -} + /* the new TLS pointer is passed in as arg #5 to sys_clone() */ + if (clone_flags & CLONE_SETTLS) + c_regs->e2 = current_frame()->d3; -asmlinkage long sys_execve(const char __user *name, - const char __user *const __user *argv, - const char __user *const __user *envp) -{ - char *filename; - int error; + p->thread.pc = (unsigned long) ret_from_fork; - filename = getname(name); - error = PTR_ERR(filename); - if (IS_ERR(filename)) - return error; - error = do_execve(filename, argv, envp, current_frame()); - putname(filename); - return error; + return 0; } unsigned long get_wchan(struct task_struct *p) diff --git a/arch/mn10300/kernel/ptrace.c b/arch/mn10300/kernel/ptrace.c index 5c0b07e6100..5bd58514e73 100644 --- a/arch/mn10300/kernel/ptrace.c +++ b/arch/mn10300/kernel/ptrace.c @@ -21,7 +21,6 @@ #include <linux/tracehook.h> #include <asm/uaccess.h> #include <asm/pgtable.h> -#include <asm/system.h> #include <asm/processor.h> #include <asm/cacheflush.h> #include <asm/fpu.h> diff --git a/arch/mn10300/kernel/rtc.c b/arch/mn10300/kernel/rtc.c index e9e20f9a4dd..48d7058b329 100644 --- a/arch/mn10300/kernel/rtc.c +++ b/arch/mn10300/kernel/rtc.c @@ -89,7 +89,7 @@ static int set_rtc_mmss(unsigned long nowtime) CMOS_WRITE(real_seconds, RTC_SECONDS); CMOS_WRITE(real_minutes, RTC_MINUTES); } else { - printk(KERN_WARNING + printk_once(KERN_NOTICE "set_rtc_mmss: can't update from %d to %d\n", cmos_minutes, real_minutes); retval = -1; diff --git a/arch/mn10300/kernel/setup.c b/arch/mn10300/kernel/setup.c index 9e7a3209a3e..2ad7f32fa12 100644 --- a/arch/mn10300/kernel/setup.c +++ b/arch/mn10300/kernel/setup.c @@ -26,7 +26,6 @@ #include <asm/processor.h> #include <linux/console.h> #include <asm/uaccess.h> -#include <asm/system.h> #include <asm/setup.h> #include <asm/io.h> #include <asm/smp.h> @@ -36,9 +35,7 @@ struct mn10300_cpuinfo boot_cpu_data; -/* For PCI or other memory-mapped resources */ -unsigned long pci_mem_start = 0x18000000; - +static char __initdata cmd_line[COMMAND_LINE_SIZE]; char redboot_command_line[COMMAND_LINE_SIZE] = "console=ttyS0,115200 root=/dev/mtdblock3 rw"; @@ -75,45 +72,19 @@ static const char *const mn10300_cputypes[] = { }; /* - * + * Pick out the memory size. We look for mem=size, + * where size is "size[KkMm]" */ -static void __init parse_mem_cmdline(char **cmdline_p) +static int __init early_mem(char *p) { - char *from, *to, c; - - /* save unparsed command line copy for /proc/cmdline */ - strcpy(boot_command_line, redboot_command_line); - - /* see if there's an explicit memory size option */ - from = redboot_command_line; - to = redboot_command_line; - c = ' '; - - for (;;) { - if (c == ' ' && !memcmp(from, "mem=", 4)) { - if (to != redboot_command_line) - to--; - memory_size = memparse(from + 4, &from); - } - - c = *(from++); - if (!c) - break; - - *(to++) = c; - } - - *to = '\0'; - *cmdline_p = redboot_command_line; + memory_size = memparse(p, &p); if (memory_size == 0) panic("Memory size not known\n"); - memory_end = (unsigned long) CONFIG_KERNEL_RAM_BASE_ADDRESS + - memory_size; - if (memory_end > phys_memory_end) - memory_end = phys_memory_end; + return 0; } +early_param("mem", early_mem); /* * architecture specific setup @@ -126,7 +97,20 @@ void __init setup_arch(char **cmdline_p) cpu_init(); unit_setup(); smp_init_cpus(); - parse_mem_cmdline(cmdline_p); + + /* save unparsed command line copy for /proc/cmdline */ + strlcpy(boot_command_line, redboot_command_line, COMMAND_LINE_SIZE); + + /* populate cmd_line too for later use, preserving boot_command_line */ + strlcpy(cmd_line, boot_command_line, COMMAND_LINE_SIZE); + *cmdline_p = cmd_line; + + parse_early_param(); + + memory_end = (unsigned long) CONFIG_KERNEL_RAM_BASE_ADDRESS + + memory_size; + if (memory_end > phys_memory_end) + memory_end = phys_memory_end; init_mm.start_code = (unsigned long)&_text; init_mm.end_code = (unsigned long) &_etext; diff --git a/arch/mn10300/kernel/signal.c b/arch/mn10300/kernel/signal.c index 690f4e9507d..9dfac5cd16e 100644 --- a/arch/mn10300/kernel/signal.c +++ b/arch/mn10300/kernel/signal.c @@ -31,69 +31,6 @@ #define DEBUG_SIG 0 -#define _BLOCKABLE (~(sigmask(SIGKILL) | sigmask(SIGSTOP))) - -/* - * atomically swap in the new signal mask, and wait for a signal. - */ -asmlinkage long sys_sigsuspend(int history0, int history1, old_sigset_t mask) -{ - mask &= _BLOCKABLE; - spin_lock_irq(¤t->sighand->siglock); - current->saved_sigmask = current->blocked; - siginitset(¤t->blocked, mask); - recalc_sigpending(); - spin_unlock_irq(¤t->sighand->siglock); - - current->state = TASK_INTERRUPTIBLE; - schedule(); - set_thread_flag(TIF_RESTORE_SIGMASK); - return -ERESTARTNOHAND; -} - -/* - * set signal action syscall - */ -asmlinkage long sys_sigaction(int sig, - const struct old_sigaction __user *act, - struct old_sigaction __user *oact) -{ - struct k_sigaction new_ka, old_ka; - int ret; - - if (act) { - old_sigset_t mask; - if (verify_area(VERIFY_READ, act, sizeof(*act)) || - __get_user(new_ka.sa.sa_handler, &act->sa_handler) || - __get_user(new_ka.sa.sa_restorer, &act->sa_restorer) || - __get_user(new_ka.sa.sa_flags, &act->sa_flags) || - __get_user(mask, &act->sa_mask)) - return -EFAULT; - siginitset(&new_ka.sa.sa_mask, mask); - } - - ret = do_sigaction(sig, act ? &new_ka : NULL, oact ? &old_ka : NULL); - - if (!ret && oact) { - if (verify_area(VERIFY_WRITE, oact, sizeof(*oact)) || - __put_user(old_ka.sa.sa_handler, &oact->sa_handler) || - __put_user(old_ka.sa.sa_restorer, &oact->sa_restorer) || - __put_user(old_ka.sa.sa_flags, &oact->sa_flags) || - __put_user(old_ka.sa.sa_mask.sig[0], &oact->sa_mask)) - return -EFAULT; - } - - return ret; -} - -/* - * set alternate signal stack syscall - */ -asmlinkage long sys_sigaltstack(const stack_t __user *uss, stack_t *uoss) -{ - return do_sigaltstack(uss, uoss, current_frame()->sp); -} - /* * do a signal return; undo the signal stack. */ @@ -171,11 +108,7 @@ asmlinkage long sys_sigreturn(void) sizeof(frame->extramask))) goto badframe; - sigdelsetmask(&set, ~_BLOCKABLE); - spin_lock_irq(¤t->sighand->siglock); - current->blocked = set; - recalc_sigpending(); - spin_unlock_irq(¤t->sighand->siglock); + set_current_blocked(&set); if (restore_sigcontext(current_frame(), &frame->sc, &d0)) goto badframe; @@ -202,17 +135,12 @@ asmlinkage long sys_rt_sigreturn(void) if (__copy_from_user(&set, &frame->uc.uc_sigmask, sizeof(set))) goto badframe; - sigdelsetmask(&set, ~_BLOCKABLE); - spin_lock_irq(¤t->sighand->siglock); - current->blocked = set; - recalc_sigpending(); - spin_unlock_irq(¤t->sighand->siglock); + set_current_blocked(&set); if (restore_sigcontext(current_frame(), &frame->uc.uc_mcontext, &d0)) goto badframe; - if (do_sigaltstack(&frame->uc.uc_stack, NULL, current_frame()->sp) == - -EFAULT) + if (restore_altstack(&frame->uc.uc_stack)) goto badframe; return d0; @@ -335,10 +263,6 @@ static int setup_frame(int sig, struct k_sigaction *ka, sigset_t *set, regs->d0 = sig; regs->d1 = (unsigned long) &frame->sc; - /* the tracer may want to single-step inside the handler */ - if (test_thread_flag(TIF_SINGLESTEP)) - ptrace_notify(SIGTRAP); - #if DEBUG_SIG printk(KERN_DEBUG "SIG deliver %d (%s:%d): sp=%p pc=%lx ra=%p\n", sig, current->comm, current->pid, frame, regs->pc, @@ -381,9 +305,7 @@ static int setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info, /* create the ucontext. */ if (__put_user(0, &frame->uc.uc_flags) || __put_user(0, &frame->uc.uc_link) || - __put_user((void *)current->sas_ss_sp, &frame->uc.uc_stack.ss_sp) || - __put_user(sas_ss_flags(regs->sp), &frame->uc.uc_stack.ss_flags) || - __put_user(current->sas_ss_size, &frame->uc.uc_stack.ss_size) || + __save_altstack(&frame->uc.uc_stack, regs->sp) || setup_sigcontext(&frame->uc.uc_mcontext, &frame->fpuctx, regs, set->sig[0]) || __copy_to_user(&frame->uc.uc_sigmask, set, sizeof(*set))) @@ -416,10 +338,6 @@ static int setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info, regs->d0 = sig; regs->d1 = (long) &frame->info; - /* the tracer may want to single-step inside the handler */ - if (test_thread_flag(TIF_SINGLESTEP)) - ptrace_notify(SIGTRAP); - #if DEBUG_SIG printk(KERN_DEBUG "SIG deliver %d (%s:%d): sp=%p pc=%lx ra=%p\n", sig, current->comm, current->pid, frame, regs->pc, @@ -444,8 +362,9 @@ static inline void stepback(struct pt_regs *regs) */ static int handle_signal(int sig, siginfo_t *info, struct k_sigaction *ka, - sigset_t *oldset, struct pt_regs *regs) + struct pt_regs *regs) { + sigset_t *oldset = sigmask_to_save(); int ret; /* Are we from a system call? */ @@ -475,18 +394,12 @@ static int handle_signal(int sig, ret = setup_rt_frame(sig, ka, info, oldset, regs); else ret = setup_frame(sig, ka, oldset, regs); + if (ret) + return ret; - if (ret == 0) { - spin_lock_irq(¤t->sighand->siglock); - sigorsets(¤t->blocked, ¤t->blocked, - &ka->sa.sa_mask); - if (!(ka->sa.sa_flags & SA_NODEFER)) - sigaddset(¤t->blocked, sig); - recalc_sigpending(); - spin_unlock_irq(¤t->sighand->siglock); - } - - return ret; + signal_delivered(sig, info, ka, regs, + test_thread_flag(TIF_SINGLESTEP)); + return 0; } /* @@ -496,31 +409,11 @@ static void do_signal(struct pt_regs *regs) { struct k_sigaction ka; siginfo_t info; - sigset_t *oldset; int signr; - /* we want the common case to go fast, which is why we may in certain - * cases get here from kernel mode */ - if (!user_mode(regs)) - return; - - if (test_thread_flag(TIF_RESTORE_SIGMASK)) - oldset = ¤t->saved_sigmask; - else - oldset = ¤t->blocked; - signr = get_signal_to_deliver(&info, &ka, regs, NULL); if (signr > 0) { - if (handle_signal(signr, &info, &ka, oldset, regs) == 0) { - /* a signal was successfully delivered; the saved - * sigmask will have been stored in the signal frame, - * and will be restored by sigreturn, so we can simply - * clear the TIF_RESTORE_SIGMASK flag */ - if (test_thread_flag(TIF_RESTORE_SIGMASK)) - clear_thread_flag(TIF_RESTORE_SIGMASK); - - tracehook_signal_handler(signr, &info, &ka, regs, - test_thread_flag(TIF_SINGLESTEP)); + if (handle_signal(signr, &info, &ka, regs) == 0) { } return; @@ -546,10 +439,7 @@ static void do_signal(struct pt_regs *regs) /* if there's no signal to deliver, we just put the saved sigmask * back */ - if (test_thread_flag(TIF_RESTORE_SIGMASK)) { - clear_thread_flag(TIF_RESTORE_SIGMASK); - sigprocmask(SIG_SETMASK, ¤t->saved_sigmask, NULL); - } + restore_saved_sigmask(); } /* @@ -569,13 +459,11 @@ asmlinkage void do_notify_resume(struct pt_regs *regs, u32 thread_info_flags) } /* deal with pending signal delivery */ - if (thread_info_flags & (_TIF_SIGPENDING | _TIF_RESTORE_SIGMASK)) + if (thread_info_flags & _TIF_SIGPENDING) do_signal(regs); if (thread_info_flags & _TIF_NOTIFY_RESUME) { clear_thread_flag(TIF_NOTIFY_RESUME); tracehook_notify_resume(current_frame()); - if (current->replacement_session_keyring) - key_replace_session_keyring(); } } diff --git a/arch/mn10300/kernel/smp-low.S b/arch/mn10300/kernel/smp-low.S index 72938cefc05..71f1b2faaa0 100644 --- a/arch/mn10300/kernel/smp-low.S +++ b/arch/mn10300/kernel/smp-low.S @@ -13,9 +13,9 @@ #include <linux/sys.h> #include <linux/linkage.h> #include <asm/smp.h> -#include <asm/system.h> #include <asm/thread_info.h> #include <asm/cpu-regs.h> +#include <asm/intctl-regs.h> #include <proc/smp-regs.h> #include <asm/asm-offsets.h> #include <asm/frame.inc> diff --git a/arch/mn10300/kernel/smp.c b/arch/mn10300/kernel/smp.c index 0dcd1c686ba..f984193718b 100644 --- a/arch/mn10300/kernel/smp.c +++ b/arch/mn10300/kernel/smp.c @@ -24,8 +24,8 @@ #include <linux/sched.h> #include <linux/profile.h> #include <linux/smp.h> +#include <linux/cpu.h> #include <asm/tlbflush.h> -#include <asm/system.h> #include <asm/bitops.h> #include <asm/processor.h> #include <asm/bug.h> @@ -39,7 +39,6 @@ #include "internal.h" #ifdef CONFIG_HOTPLUG_CPU -#include <linux/cpu.h> #include <asm/cacheflush.h> static unsigned long sleep_mode[NR_CPUS]; @@ -113,15 +112,17 @@ static void init_ipi(void); */ static void mn10300_ipi_disable(unsigned int irq); static void mn10300_ipi_enable(unsigned int irq); -static void mn10300_ipi_ack(unsigned int irq); -static void mn10300_ipi_nop(unsigned int irq); +static void mn10300_ipi_chip_disable(struct irq_data *d); +static void mn10300_ipi_chip_enable(struct irq_data *d); +static void mn10300_ipi_ack(struct irq_data *d); +static void mn10300_ipi_nop(struct irq_data *d); static struct irq_chip mn10300_ipi_type = { .name = "cpu_ipi", - .disable = mn10300_ipi_disable, - .enable = mn10300_ipi_enable, - .ack = mn10300_ipi_ack, - .eoi = mn10300_ipi_nop + .irq_disable = mn10300_ipi_chip_disable, + .irq_enable = mn10300_ipi_chip_enable, + .irq_ack = mn10300_ipi_ack, + .irq_eoi = mn10300_ipi_nop }; static irqreturn_t smp_reschedule_interrupt(int irq, void *dev_id); @@ -129,10 +130,12 @@ static irqreturn_t smp_call_function_interrupt(int irq, void *dev_id); static struct irqaction reschedule_ipi = { .handler = smp_reschedule_interrupt, + .flags = IRQF_NOBALANCING, .name = "smp reschedule IPI" }; static struct irqaction call_function_ipi = { .handler = smp_call_function_interrupt, + .flags = IRQF_NOBALANCING, .name = "smp call function IPI" }; @@ -140,7 +143,7 @@ static struct irqaction call_function_ipi = { static irqreturn_t smp_ipi_timer_interrupt(int irq, void *dev_id); static struct irqaction local_timer_ipi = { .handler = smp_ipi_timer_interrupt, - .flags = IRQF_DISABLED, + .flags = IRQF_NOBALANCING, .name = "smp local timer IPI" }; #endif @@ -154,15 +157,15 @@ static void init_ipi(void) u16 tmp16; /* set up the reschedule IPI */ - set_irq_chip_and_handler(RESCHEDULE_IPI, - &mn10300_ipi_type, handle_percpu_irq); + irq_set_chip_and_handler(RESCHEDULE_IPI, &mn10300_ipi_type, + handle_percpu_irq); setup_irq(RESCHEDULE_IPI, &reschedule_ipi); set_intr_level(RESCHEDULE_IPI, RESCHEDULE_GxICR_LV); mn10300_ipi_enable(RESCHEDULE_IPI); /* set up the call function IPI */ - set_irq_chip_and_handler(CALL_FUNC_SINGLE_IPI, - &mn10300_ipi_type, handle_percpu_irq); + irq_set_chip_and_handler(CALL_FUNC_SINGLE_IPI, &mn10300_ipi_type, + handle_percpu_irq); setup_irq(CALL_FUNC_SINGLE_IPI, &call_function_ipi); set_intr_level(CALL_FUNC_SINGLE_IPI, CALL_FUNCTION_GxICR_LV); mn10300_ipi_enable(CALL_FUNC_SINGLE_IPI); @@ -170,8 +173,8 @@ static void init_ipi(void) /* set up the local timer IPI */ #if !defined(CONFIG_GENERIC_CLOCKEVENTS) || \ defined(CONFIG_GENERIC_CLOCKEVENTS_BROADCAST) - set_irq_chip_and_handler(LOCAL_TIMER_IPI, - &mn10300_ipi_type, handle_percpu_irq); + irq_set_chip_and_handler(LOCAL_TIMER_IPI, &mn10300_ipi_type, + handle_percpu_irq); setup_irq(LOCAL_TIMER_IPI, &local_timer_ipi); set_intr_level(LOCAL_TIMER_IPI, LOCAL_TIMER_GxICR_LV); mn10300_ipi_enable(LOCAL_TIMER_IPI); @@ -179,6 +182,7 @@ static void init_ipi(void) #ifdef CONFIG_MN10300_CACHE_ENABLED /* set up the cache flush IPI */ + irq_set_chip(FLUSH_CACHE_IPI, &mn10300_ipi_type); flags = arch_local_cli_save(); __set_intr_stub(NUM2EXCEP_IRQ_LEVEL(FLUSH_CACHE_GxICR_LV), mn10300_low_ipi_handler); @@ -188,6 +192,7 @@ static void init_ipi(void) #endif /* set up the NMI call function IPI */ + irq_set_chip(CALL_FUNCTION_NMI_IPI, &mn10300_ipi_type); flags = arch_local_cli_save(); GxICR(CALL_FUNCTION_NMI_IPI) = GxICR_NMI | GxICR_ENABLE | GxICR_DETECT; tmp16 = GxICR(CALL_FUNCTION_NMI_IPI); @@ -198,6 +203,10 @@ static void init_ipi(void) __set_intr_stub(NUM2EXCEP_IRQ_LEVEL(SMP_BOOT_GxICR_LV), mn10300_low_ipi_handler); arch_local_irq_restore(flags); + +#ifdef CONFIG_KERNEL_DEBUGGER + irq_set_chip(DEBUGGER_NMI_IPI, &mn10300_ipi_type); +#endif } /** @@ -236,6 +245,11 @@ static void mn10300_ipi_enable(unsigned int irq) arch_local_irq_restore(flags); } +static void mn10300_ipi_chip_enable(struct irq_data *d) +{ + mn10300_ipi_enable(d->irq); +} + /** * mn10300_ipi_disable - Disable an IPI * @irq: The IPI to be disabled. @@ -254,6 +268,12 @@ static void mn10300_ipi_disable(unsigned int irq) arch_local_irq_restore(flags); } +static void mn10300_ipi_chip_disable(struct irq_data *d) +{ + mn10300_ipi_disable(d->irq); +} + + /** * mn10300_ipi_ack - Acknowledge an IPI interrupt in the PIC * @irq: The IPI to be acknowledged. @@ -261,8 +281,9 @@ static void mn10300_ipi_disable(unsigned int irq) * Clear the interrupt detection flag for the IPI on the appropriate interrupt * channel in the PIC. */ -static void mn10300_ipi_ack(unsigned int irq) +static void mn10300_ipi_ack(struct irq_data *d) { + unsigned int irq = d->irq; unsigned long flags; u16 tmp; @@ -276,7 +297,7 @@ static void mn10300_ipi_ack(unsigned int irq) * mn10300_ipi_nop - Dummy IPI action * @irq: The IPI to be acted upon. */ -static void mn10300_ipi_nop(unsigned int irq) +static void mn10300_ipi_nop(struct irq_data *d) { } @@ -295,7 +316,7 @@ static void send_IPI_mask(const cpumask_t *cpumask, int irq) u16 tmp; for (i = 0; i < NR_CPUS; i++) { - if (cpu_isset(i, *cpumask)) { + if (cpumask_test_cpu(i, cpumask)) { /* send IPI */ tmp = CROSS_GxICR(irq, i); CROSS_GxICR(irq, i) = @@ -328,8 +349,8 @@ void send_IPI_allbutself(int irq) { cpumask_t cpumask; - cpumask = cpu_online_map; - cpu_clear(smp_processor_id(), cpumask); + cpumask_copy(&cpumask, cpu_online_mask); + cpumask_clear_cpu(smp_processor_id(), &cpumask); send_IPI_mask(&cpumask, irq); } @@ -379,8 +400,8 @@ int smp_nmi_call_function(smp_call_func_t func, void *info, int wait) data.func = func; data.info = info; - data.started = cpu_online_map; - cpu_clear(smp_processor_id(), data.started); + cpumask_copy(&data.started, cpu_online_mask); + cpumask_clear_cpu(smp_processor_id(), &data.started); data.wait = wait; if (wait) data.finished = data.started; @@ -396,14 +417,14 @@ int smp_nmi_call_function(smp_call_func_t func, void *info, int wait) if (CALL_FUNCTION_NMI_IPI_TIMEOUT > 0) { for (cnt = 0; cnt < CALL_FUNCTION_NMI_IPI_TIMEOUT && - !cpus_empty(data.started); + !cpumask_empty(&data.started); cnt++) mdelay(1); if (wait && cnt < CALL_FUNCTION_NMI_IPI_TIMEOUT) { for (cnt = 0; cnt < CALL_FUNCTION_NMI_IPI_TIMEOUT && - !cpus_empty(data.finished); + !cpumask_empty(&data.finished); cnt++) mdelay(1); } @@ -414,10 +435,10 @@ int smp_nmi_call_function(smp_call_func_t func, void *info, int wait) } else { /* If timeout value is zero, wait until cpumask has been * cleared */ - while (!cpus_empty(data.started)) + while (!cpumask_empty(&data.started)) barrier(); if (wait) - while (!cpus_empty(data.finished)) + while (!cpumask_empty(&data.finished)) barrier(); } @@ -426,6 +447,22 @@ int smp_nmi_call_function(smp_call_func_t func, void *info, int wait) } /** + * smp_jump_to_debugger - Make other CPUs enter the debugger by sending an IPI + * + * Send a non-maskable request to all other CPUs in the system, instructing + * them to jump into the debugger. The caller is responsible for checking that + * the other CPUs responded to the instruction. + * + * The caller should make sure that this CPU's debugger IPI is disabled. + */ +void smp_jump_to_debugger(void) +{ + if (num_online_cpus() > 1) + /* Send a message to all other CPUs */ + send_IPI_allbutself(DEBUGGER_NMI_IPI); +} + +/** * stop_this_cpu - Callback to stop a CPU. * @unused: Callback context (ignored). */ @@ -442,12 +479,12 @@ void stop_this_cpu(void *unused) #endif /* CONFIG_GDBSTUB */ flags = arch_local_cli_save(); - cpu_clear(smp_processor_id(), cpu_online_map); + set_cpu_online(smp_processor_id(), false); while (!stopflag) cpu_relax(); - cpu_set(smp_processor_id(), cpu_online_map); + set_cpu_online(smp_processor_id(), true); arch_local_irq_restore(flags); } @@ -464,14 +501,11 @@ void smp_send_stop(void) * @irq: The interrupt number. * @dev_id: The device ID. * - * We need do nothing here, since the scheduling will be effected on our way - * back through entry.S. - * * Returns IRQ_HANDLED to indicate we handled the interrupt successfully. */ static irqreturn_t smp_reschedule_interrupt(int irq, void *dev_id) { - /* do nothing */ + scheduler_ipi(); return IRQ_HANDLED; } @@ -502,12 +536,13 @@ void smp_nmi_call_function_interrupt(void) * execute the function */ smp_mb(); - cpu_clear(smp_processor_id(), nmi_call_data->started); + cpumask_clear_cpu(smp_processor_id(), &nmi_call_data->started); (*func)(info); if (wait) { smp_mb(); - cpu_clear(smp_processor_id(), nmi_call_data->finished); + cpumask_clear_cpu(smp_processor_id(), + &nmi_call_data->finished); } } @@ -589,7 +624,7 @@ static void __init smp_cpu_init(void) /** * smp_prepare_cpu_init - Initialise CPU in startup_secondary * - * Set interrupt level 0-6 setting and init ICR of gdbstub. + * Set interrupt level 0-6 setting and init ICR of the kernel debugger. */ void smp_prepare_cpu_init(void) { @@ -608,15 +643,15 @@ void smp_prepare_cpu_init(void) for (loop = 0; loop < GxICR_NUM_IRQS; loop++) GxICR(loop) = GxICR_LEVEL_6 | GxICR_DETECT; -#ifdef CONFIG_GDBSTUB - /* initialise GDB-stub */ +#ifdef CONFIG_KERNEL_DEBUGGER + /* initialise the kernel debugger interrupt */ do { unsigned long flags; u16 tmp16; flags = arch_local_cli_save(); - GxICR(GDB_NMI_IPI) = GxICR_NMI | GxICR_ENABLE | GxICR_DETECT; - tmp16 = GxICR(GDB_NMI_IPI); + GxICR(DEBUGGER_NMI_IPI) = GxICR_NMI | GxICR_ENABLE | GxICR_DETECT; + tmp16 = GxICR(DEBUGGER_NMI_IPI); arch_local_irq_restore(flags); } while (0); #endif @@ -630,7 +665,7 @@ int __init start_secondary(void *unused) { smp_cpu_init(); smp_callin(); - while (!cpu_isset(smp_processor_id(), smp_commenced_mask)) + while (!cpumask_test_cpu(smp_processor_id(), &smp_commenced_mask)) cpu_relax(); local_flush_tlb(); @@ -640,7 +675,7 @@ int __init start_secondary(void *unused) #ifdef CONFIG_GENERIC_CLOCKEVENTS init_clockevents(); #endif - cpu_idle(); + cpu_startup_entry(CPUHP_ONLINE); return 0; } @@ -753,13 +788,14 @@ static int __init do_boot_cpu(int phy_id) if (send_status == 0) { /* Allow AP to start initializing */ - cpu_set(cpu_id, cpu_callout_map); + cpumask_set_cpu(cpu_id, &cpu_callout_map); /* Wait for setting cpu_callin_map */ timeout = 0; do { udelay(1000); - callin_status = cpu_isset(cpu_id, cpu_callin_map); + callin_status = cpumask_test_cpu(cpu_id, + &cpu_callin_map); } while (callin_status == 0 && timeout++ < 5000); if (callin_status == 0) @@ -769,9 +805,9 @@ static int __init do_boot_cpu(int phy_id) } if (send_status == GxICR_REQUEST || callin_status == 0) { - cpu_clear(cpu_id, cpu_callout_map); - cpu_clear(cpu_id, cpu_callin_map); - cpu_clear(cpu_id, cpu_initialized); + cpumask_clear_cpu(cpu_id, &cpu_callout_map); + cpumask_clear_cpu(cpu_id, &cpu_callin_map); + cpumask_clear_cpu(cpu_id, &cpu_initialized); cpucount--; return 1; } @@ -806,7 +842,7 @@ static void __init smp_callin(void) cpu = smp_processor_id(); timeout = jiffies + (2 * HZ); - if (cpu_isset(cpu, cpu_callin_map)) { + if (cpumask_test_cpu(cpu, &cpu_callin_map)) { printk(KERN_ERR "CPU#%d already present.\n", cpu); BUG(); } @@ -814,7 +850,7 @@ static void __init smp_callin(void) /* Wait for AP startup 2s total */ while (time_before(jiffies, timeout)) { - if (cpu_isset(cpu, cpu_callout_map)) + if (cpumask_test_cpu(cpu, &cpu_callout_map)) break; cpu_relax(); } @@ -834,11 +870,11 @@ static void __init smp_callin(void) smp_store_cpu_info(cpu); /* Allow the boot processor to continue */ - cpu_set(cpu, cpu_callin_map); + cpumask_set_cpu(cpu, &cpu_callin_map); } /** - * smp_online - Set cpu_online_map + * smp_online - Set cpu_online_mask */ static void __init smp_online(void) { @@ -846,10 +882,11 @@ static void __init smp_online(void) cpu = smp_processor_id(); - local_irq_enable(); + notify_cpu_starting(cpu); - cpu_set(cpu, cpu_online_map); - smp_wmb(); + set_cpu_online(cpu, true); + + local_irq_enable(); } /** @@ -865,13 +902,13 @@ void __init smp_cpus_done(unsigned int max_cpus) /* * smp_prepare_boot_cpu - Set up stuff for the boot processor. * - * Set up the cpu_online_map, cpu_callout_map and cpu_callin_map of the boot + * Set up the cpu_online_mask, cpu_callout_map and cpu_callin_map of the boot * processor (CPU 0). */ -void __devinit smp_prepare_boot_cpu(void) +void smp_prepare_boot_cpu(void) { - cpu_set(0, cpu_callout_map); - cpu_set(0, cpu_callin_map); + cpumask_set_cpu(0, &cpu_callout_map); + cpumask_set_cpu(0, &cpu_callin_map); current_thread_info()->cpu = 0; } @@ -893,27 +930,25 @@ void initialize_secondary(void) * __cpu_up - Set smp_commenced_mask for the nominated CPU * @cpu: The target CPU. */ -int __devinit __cpu_up(unsigned int cpu) +int __cpu_up(unsigned int cpu, struct task_struct *tidle) { int timeout; #ifdef CONFIG_HOTPLUG_CPU - if (num_online_cpus() == 1) - disable_hlt(); if (sleep_mode[cpu]) run_wakeup_cpu(cpu); #endif /* CONFIG_HOTPLUG_CPU */ - cpu_set(cpu, smp_commenced_mask); + cpumask_set_cpu(cpu, &smp_commenced_mask); /* Wait 5s total for a response */ for (timeout = 0 ; timeout < 5000 ; timeout++) { - if (cpu_isset(cpu, cpu_online_map)) + if (cpu_online(cpu)) break; udelay(1000); } - BUG_ON(!cpu_isset(cpu, cpu_online_map)); + BUG_ON(!cpu_online(cpu)); return 0; } @@ -959,16 +994,13 @@ int __cpu_disable(void) return -EBUSY; migrate_irqs(); - cpu_clear(cpu, current->active_mm->cpu_vm_mask); + cpumask_clear_cpu(cpu, &mm_cpumask(current->active_mm)); return 0; } void __cpu_die(unsigned int cpu) { run_sleep_cpu(cpu); - - if (num_online_cpus() == 1) - enable_hlt(); } #ifdef CONFIG_MN10300_CACHE_ENABLED @@ -1064,13 +1096,13 @@ static int hotplug_cpu_nmi_call_function(cpumask_t cpumask, do { mn10300_local_dcache_inv_range(start, end); barrier(); - } while (!cpus_empty(nmi_call_func_mask_data.started)); + } while (!cpumask_empty(&nmi_call_func_mask_data.started)); if (wait) { do { mn10300_local_dcache_inv_range(start, end); barrier(); - } while (!cpus_empty(nmi_call_func_mask_data.finished)); + } while (!cpumask_empty(&nmi_call_func_mask_data.finished)); } spin_unlock(&smp_nmi_call_lock); @@ -1081,9 +1113,9 @@ static void restart_wakeup_cpu(void) { unsigned int cpu = smp_processor_id(); - cpu_set(cpu, cpu_callin_map); + cpumask_set_cpu(cpu, &cpu_callin_map); local_flush_tlb(); - cpu_set(cpu, cpu_online_map); + set_cpu_online(cpu, true); smp_wmb(); } @@ -1114,8 +1146,9 @@ static void sleep_cpu(void *unused) static void run_sleep_cpu(unsigned int cpu) { unsigned long flags; - cpumask_t cpumask = cpumask_of(cpu); + cpumask_t cpumask; + cpumask_copy(&cpumask, &cpumask_of(cpu)); flags = arch_local_cli_save(); hotplug_cpu_nmi_call_function(cpumask, prepare_sleep_cpu, NULL, 1); hotplug_cpu_nmi_call_function(cpumask, sleep_cpu, NULL, 0); diff --git a/arch/mn10300/kernel/switch_to.S b/arch/mn10300/kernel/switch_to.S index 9074d0fb878..de3e74fc9ea 100644 --- a/arch/mn10300/kernel/switch_to.S +++ b/arch/mn10300/kernel/switch_to.S @@ -39,11 +39,17 @@ ENTRY(__switch_to) # save prev context mov __switch_back,d0 - mov d0,(THREAD_PC,a0) mov sp,a2 mov a2,(THREAD_SP,a0) mov a3,(THREAD_A3,a0) +#ifdef CONFIG_KGDB + btst 0xff,(kgdb_single_step) + bne __switch_to__lift_sstep_bp +__switch_to__continue: +#endif + mov d0,(THREAD_PC,a0) + mov (THREAD_A3,a1),a3 mov (THREAD_SP,a1),a2 @@ -68,3 +74,106 @@ ENTRY(__switch_to) __switch_back: and ~EPSW_NMID,epsw ret [d2,d3,a2,a3,exreg1],32 + +#ifdef CONFIG_KGDB +############################################################################### +# +# Lift the single-step breakpoints when the task being traced is switched out +# A0 = prev +# A1 = next +# +############################################################################### +__switch_to__lift_sstep_bp: + add -12,sp + mov a0,e4 + mov a1,e5 + + # Clear the single-step flag to prevent us coming this way until we get + # switched back in + bclr 0xff,(kgdb_single_step) + + # Remove first breakpoint + mov (kgdb_sstep_bp_addr),a2 + cmp 0,a2 + beq 1f + movbu (kgdb_sstep_bp),d0 + movbu d0,(a2) +#if defined(CONFIG_MN10300_CACHE_FLUSH_ICACHE) || defined(CONFIG_MN10300_CACHE_INV_ICACHE) + mov a2,d0 + mov a2,d1 + add 1,d1 + calls flush_icache_range +#endif +1: + + # Remove second breakpoint + mov (kgdb_sstep_bp_addr+4),a2 + cmp 0,a2 + beq 2f + movbu (kgdb_sstep_bp+1),d0 + movbu d0,(a2) +#if defined(CONFIG_MN10300_CACHE_FLUSH_ICACHE) || defined(CONFIG_MN10300_CACHE_INV_ICACHE) + mov a2,d0 + mov a2,d1 + add 1,d1 + calls flush_icache_range +#endif +2: + + # Change the resumption address and return + mov __switch_back__reinstall_sstep_bp,d0 + mov e4,a0 + mov e5,a1 + add 12,sp + bra __switch_to__continue + +############################################################################### +# +# Reinstall the single-step breakpoints when the task being traced is switched +# back in (A1 points to the new thread_struct). +# +############################################################################### +__switch_back__reinstall_sstep_bp: + add -12,sp + mov a0,e4 # save the return value + mov 0xff,d3 + + # Reinstall first breakpoint + mov (kgdb_sstep_bp_addr),a2 + cmp 0,a2 + beq 1f + movbu (a2),d0 + movbu d0,(kgdb_sstep_bp) + movbu d3,(a2) +#if defined(CONFIG_MN10300_CACHE_FLUSH_ICACHE) || defined(CONFIG_MN10300_CACHE_INV_ICACHE) + mov a2,d0 + mov a2,d1 + add 1,d1 + calls flush_icache_range +#endif +1: + + # Reinstall second breakpoint + mov (kgdb_sstep_bp_addr+4),a2 + cmp 0,a2 + beq 2f + movbu (a2),d0 + movbu d0,(kgdb_sstep_bp+1) + movbu d3,(a2) +#if defined(CONFIG_MN10300_CACHE_FLUSH_ICACHE) || defined(CONFIG_MN10300_CACHE_INV_ICACHE) + mov a2,d0 + mov a2,d1 + add 1,d1 + calls flush_icache_range +#endif +2: + + mov d3,(kgdb_single_step) + + # Restore the return value (the previous thread_struct pointer) + mov e4,a0 + mov a0,d0 + add 12,sp + bra __switch_back + +#endif /* CONFIG_KGDB */ diff --git a/arch/mn10300/kernel/time.c b/arch/mn10300/kernel/time.c index f860a340acc..67c6416a58f 100644 --- a/arch/mn10300/kernel/time.c +++ b/arch/mn10300/kernel/time.c @@ -40,21 +40,17 @@ unsigned long long sched_clock(void) unsigned long long ll; unsigned l[2]; } tsc64, result; - unsigned long tsc, tmp; + unsigned long tmp; unsigned product[3]; /* 96-bit intermediate value */ /* cnt32_to_63() is not safe with preemption */ preempt_disable(); - /* read the TSC value - */ - tsc = get_cycles(); - - /* expand to 64-bits. + /* expand the tsc to 64-bits. * - sched_clock() must be called once a minute or better or the * following will go horribly wrong - see cnt32_to_63() */ - tsc64.ll = cnt32_to_63(tsc) & 0x7fffffffffffffffULL; + tsc64.ll = cnt32_to_63(get_cycles()) & 0x7fffffffffffffffULL; preempt_enable(); @@ -97,83 +93,6 @@ irqreturn_t local_timer_interrupt(void) return IRQ_HANDLED; } -#ifndef CONFIG_GENERIC_TIME -/* - * advance the kernel's time keeping clocks (xtime and jiffies) - * - we use Timer 0 & 1 cascaded as a clock to nudge us the next time - * there's a need to update - */ -static irqreturn_t timer_interrupt(int irq, void *dev_id) -{ - unsigned tsc, elapse; - irqreturn_t ret; - - write_seqlock(&xtime_lock); - - while (tsc = get_cycles(), - elapse = tsc - mn10300_last_tsc, /* time elapsed since last - * tick */ - elapse > MN10300_TSC_PER_HZ - ) { - mn10300_last_tsc += MN10300_TSC_PER_HZ; - - /* advance the kernel's time tracking system */ - do_timer(1); - } - - write_sequnlock(&xtime_lock); - - ret = local_timer_interrupt(); -#ifdef CONFIG_SMP - send_IPI_allbutself(LOCAL_TIMER_IPI); -#endif - return ret; -} - -static struct irqaction timer_irq = { - .handler = timer_interrupt, - .flags = IRQF_DISABLED | IRQF_SHARED | IRQF_TIMER, - .name = "timer", -}; -#endif /* CONFIG_GENERIC_TIME */ - -#ifdef CONFIG_CSRC_MN10300 -void __init clocksource_set_clock(struct clocksource *cs, unsigned int clock) -{ - u64 temp; - u32 shift; - - /* Find a shift value */ - for (shift = 32; shift > 0; shift--) { - temp = (u64) NSEC_PER_SEC << shift; - do_div(temp, clock); - if ((temp >> 32) == 0) - break; - } - cs->shift = shift; - cs->mult = (u32) temp; -} -#endif - -#if CONFIG_CEVT_MN10300 -void __cpuinit clockevent_set_clock(struct clock_event_device *cd, - unsigned int clock) -{ - u64 temp; - u32 shift; - - /* Find a shift value */ - for (shift = 32; shift > 0; shift--) { - temp = (u64) clock << shift; - do_div(temp, NSEC_PER_SEC); - if ((temp >> 32) == 0) - break; - } - cd->shift = shift; - cd->mult = (u32) temp; -} -#endif - /* * initialise the various timers used by the main part of the kernel */ @@ -185,11 +104,7 @@ void __init time_init(void) */ TMPSCNT |= TMPSCNT_ENABLE; -#ifdef CONFIG_GENERIC_TIME init_clocksource(); -#else - startup_timestamp_counter(); -#endif printk(KERN_INFO "timestamp counter I/O clock running at %lu.%02lu" @@ -198,12 +113,7 @@ void __init time_init(void) mn10300_last_tsc = read_timestamp_counter(); -#ifdef CONFIG_GENERIC_CLOCKEVENTS init_clockevents(); -#else - reload_jiffies_counter(MN10300_JC_PER_HZ - 1); - setup_jiffies_interrupt(TMJCIRQ, &timer_irq, CONFIG_TIMER_IRQ_LEVEL); -#endif #ifdef CONFIG_MN10300_WD_TIMER /* start the watchdog timer */ diff --git a/arch/mn10300/kernel/traps.c b/arch/mn10300/kernel/traps.c index b90c3f160c7..a7a987c7954 100644 --- a/arch/mn10300/kernel/traps.c +++ b/arch/mn10300/kernel/traps.c @@ -26,11 +26,11 @@ #include <linux/kdebug.h> #include <linux/bug.h> #include <linux/irq.h> +#include <linux/export.h> #include <asm/processor.h> -#include <asm/system.h> -#include <asm/uaccess.h> +#include <linux/uaccess.h> #include <asm/io.h> -#include <asm/atomic.h> +#include <linux/atomic.h> #include <asm/smp.h> #include <asm/pgalloc.h> #include <asm/cacheflush.h> @@ -38,8 +38,9 @@ #include <asm/busctl-regs.h> #include <unit/leds.h> #include <asm/fpu.h> -#include <asm/gdb-stub.h> #include <asm/sections.h> +#include <asm/debugger.h> +#include "internal.h" #if (CONFIG_INTERRUPT_VECTOR_BASE & 0xffffff) #error "INTERRUPT_VECTOR_BASE not aligned to 16MiB boundary!" @@ -49,63 +50,169 @@ int kstack_depth_to_print = 24; spinlock_t die_lock = __SPIN_LOCK_UNLOCKED(die_lock); -ATOMIC_NOTIFIER_HEAD(mn10300_die_chain); +struct exception_to_signal_map { + u8 signo; + u32 si_code; +}; + +static const struct exception_to_signal_map exception_to_signal_map[256] = { + /* MMU exceptions */ + [EXCEP_ITLBMISS >> 3] = { 0, 0 }, + [EXCEP_DTLBMISS >> 3] = { 0, 0 }, + [EXCEP_IAERROR >> 3] = { 0, 0 }, + [EXCEP_DAERROR >> 3] = { 0, 0 }, + + /* system exceptions */ + [EXCEP_TRAP >> 3] = { SIGTRAP, TRAP_BRKPT }, + [EXCEP_ISTEP >> 3] = { SIGTRAP, TRAP_TRACE }, /* Monitor */ + [EXCEP_IBREAK >> 3] = { SIGTRAP, TRAP_HWBKPT }, /* Monitor */ + [EXCEP_OBREAK >> 3] = { SIGTRAP, TRAP_HWBKPT }, /* Monitor */ + [EXCEP_PRIVINS >> 3] = { SIGILL, ILL_PRVOPC }, + [EXCEP_UNIMPINS >> 3] = { SIGILL, ILL_ILLOPC }, + [EXCEP_UNIMPEXINS >> 3] = { SIGILL, ILL_ILLOPC }, + [EXCEP_MEMERR >> 3] = { SIGSEGV, SEGV_ACCERR }, + [EXCEP_MISALIGN >> 3] = { SIGBUS, BUS_ADRALN }, + [EXCEP_BUSERROR >> 3] = { SIGBUS, BUS_ADRERR }, + [EXCEP_ILLINSACC >> 3] = { SIGSEGV, SEGV_ACCERR }, + [EXCEP_ILLDATACC >> 3] = { SIGSEGV, SEGV_ACCERR }, + [EXCEP_IOINSACC >> 3] = { SIGSEGV, SEGV_ACCERR }, + [EXCEP_PRIVINSACC >> 3] = { SIGSEGV, SEGV_ACCERR }, /* userspace */ + [EXCEP_PRIVDATACC >> 3] = { SIGSEGV, SEGV_ACCERR }, /* userspace */ + [EXCEP_DATINSACC >> 3] = { SIGSEGV, SEGV_ACCERR }, + [EXCEP_DOUBLE_FAULT >> 3] = { SIGILL, ILL_BADSTK }, + + /* FPU exceptions */ + [EXCEP_FPU_DISABLED >> 3] = { SIGILL, ILL_COPROC }, + [EXCEP_FPU_UNIMPINS >> 3] = { SIGILL, ILL_COPROC }, + [EXCEP_FPU_OPERATION >> 3] = { SIGFPE, FPE_INTDIV }, + + /* interrupts */ + [EXCEP_WDT >> 3] = { SIGALRM, 0 }, + [EXCEP_NMI >> 3] = { SIGQUIT, 0 }, + [EXCEP_IRQ_LEVEL0 >> 3] = { SIGINT, 0 }, + [EXCEP_IRQ_LEVEL1 >> 3] = { 0, 0 }, + [EXCEP_IRQ_LEVEL2 >> 3] = { 0, 0 }, + [EXCEP_IRQ_LEVEL3 >> 3] = { 0, 0 }, + [EXCEP_IRQ_LEVEL4 >> 3] = { 0, 0 }, + [EXCEP_IRQ_LEVEL5 >> 3] = { 0, 0 }, + [EXCEP_IRQ_LEVEL6 >> 3] = { 0, 0 }, + + /* system calls */ + [EXCEP_SYSCALL0 >> 3] = { 0, 0 }, + [EXCEP_SYSCALL1 >> 3] = { SIGILL, ILL_ILLTRP }, + [EXCEP_SYSCALL2 >> 3] = { SIGILL, ILL_ILLTRP }, + [EXCEP_SYSCALL3 >> 3] = { SIGILL, ILL_ILLTRP }, + [EXCEP_SYSCALL4 >> 3] = { SIGILL, ILL_ILLTRP }, + [EXCEP_SYSCALL5 >> 3] = { SIGILL, ILL_ILLTRP }, + [EXCEP_SYSCALL6 >> 3] = { SIGILL, ILL_ILLTRP }, + [EXCEP_SYSCALL7 >> 3] = { SIGILL, ILL_ILLTRP }, + [EXCEP_SYSCALL8 >> 3] = { SIGILL, ILL_ILLTRP }, + [EXCEP_SYSCALL9 >> 3] = { SIGILL, ILL_ILLTRP }, + [EXCEP_SYSCALL10 >> 3] = { SIGILL, ILL_ILLTRP }, + [EXCEP_SYSCALL11 >> 3] = { SIGILL, ILL_ILLTRP }, + [EXCEP_SYSCALL12 >> 3] = { SIGILL, ILL_ILLTRP }, + [EXCEP_SYSCALL13 >> 3] = { SIGILL, ILL_ILLTRP }, + [EXCEP_SYSCALL14 >> 3] = { SIGILL, ILL_ILLTRP }, + [EXCEP_SYSCALL15 >> 3] = { SIGABRT, 0 }, +}; /* - * These constants are for searching for possible module text - * segments. MODULE_RANGE is a guess of how much space is likely - * to be vmalloced. + * Handle kernel exceptions. + * + * See if there's a fixup handler we can force a jump to when an exception + * happens due to something kernel code did */ -#define MODULE_RANGE (8 * 1024 * 1024) - -#define DO_ERROR(signr, prologue, str, name) \ -asmlinkage void name(struct pt_regs *regs, u32 intcode) \ -{ \ - prologue; \ - if (die_if_no_fixup(str, regs, intcode)) \ - return; \ - force_sig(signr, current); \ -} +int die_if_no_fixup(const char *str, struct pt_regs *regs, + enum exception_code code) +{ + u8 opcode; + int signo, si_code; + + if (user_mode(regs)) + return 0; + + peripheral_leds_display_exception(code); + + signo = exception_to_signal_map[code >> 3].signo; + si_code = exception_to_signal_map[code >> 3].si_code; + + switch (code) { + /* see if we can fixup the kernel accessing memory */ + case EXCEP_ITLBMISS: + case EXCEP_DTLBMISS: + case EXCEP_IAERROR: + case EXCEP_DAERROR: + case EXCEP_MEMERR: + case EXCEP_MISALIGN: + case EXCEP_BUSERROR: + case EXCEP_ILLDATACC: + case EXCEP_IOINSACC: + case EXCEP_PRIVINSACC: + case EXCEP_PRIVDATACC: + case EXCEP_DATINSACC: + if (fixup_exception(regs)) + return 1; + break; + + case EXCEP_TRAP: + case EXCEP_UNIMPINS: + if (probe_kernel_read(&opcode, (u8 *)regs->pc, 1) < 0) + break; + if (opcode == 0xff) { + if (notify_die(DIE_BREAKPOINT, str, regs, code, 0, 0)) + return 1; + if (at_debugger_breakpoint(regs)) + regs->pc++; + signo = SIGTRAP; + si_code = TRAP_BRKPT; + } + break; + + case EXCEP_SYSCALL1 ... EXCEP_SYSCALL14: + /* syscall return addr is _after_ the instruction */ + regs->pc -= 2; + break; + + case EXCEP_SYSCALL15: + if (report_bug(regs->pc, regs) == BUG_TRAP_TYPE_WARN) + return 1; + + /* syscall return addr is _after_ the instruction */ + regs->pc -= 2; + break; + + default: + break; + } + + if (debugger_intercept(code, signo, si_code, regs) == 0) + return 1; -#define DO_EINFO(signr, prologue, str, name, sicode) \ -asmlinkage void name(struct pt_regs *regs, u32 intcode) \ -{ \ - siginfo_t info; \ - prologue; \ - if (die_if_no_fixup(str, regs, intcode)) \ - return; \ - info.si_signo = signr; \ - if (signr == SIGILL && sicode == ILL_ILLOPC) { \ - uint8_t opcode; \ - if (get_user(opcode, (uint8_t __user *)regs->pc) == 0) \ - if (opcode == 0xff) \ - info.si_signo = SIGTRAP; \ - } \ - info.si_errno = 0; \ - info.si_code = sicode; \ - info.si_addr = (void *) regs->pc; \ - force_sig_info(info.si_signo, &info, current); \ + if (notify_die(DIE_GPF, str, regs, code, 0, 0)) + return 1; + + /* make the process die as the last resort */ + die(str, regs, code); } -DO_ERROR(SIGTRAP, {}, "trap", trap); -DO_ERROR(SIGSEGV, {}, "ibreak", ibreak); -DO_ERROR(SIGSEGV, {}, "obreak", obreak); -DO_EINFO(SIGSEGV, {}, "access error", access_error, SEGV_ACCERR); -DO_EINFO(SIGSEGV, {}, "insn access error", insn_acc_error, SEGV_ACCERR); -DO_EINFO(SIGSEGV, {}, "data access error", data_acc_error, SEGV_ACCERR); -DO_EINFO(SIGILL, {}, "privileged opcode", priv_op, ILL_PRVOPC); -DO_EINFO(SIGILL, {}, "invalid opcode", invalid_op, ILL_ILLOPC); -DO_EINFO(SIGILL, {}, "invalid ex opcode", invalid_exop, ILL_ILLOPC); -DO_EINFO(SIGBUS, {}, "invalid address", mem_error, BUS_ADRERR); -DO_EINFO(SIGBUS, {}, "bus error", bus_error, BUS_ADRERR); - -DO_ERROR(SIGTRAP, -#ifndef CONFIG_MN10300_USING_JTAG - DCR &= ~0x0001, -#else - {}, -#endif - "single step", istep); +/* + * General exception handler + */ +asmlinkage void handle_exception(struct pt_regs *regs, u32 intcode) +{ + siginfo_t info; + + /* deal with kernel exceptions here */ + if (die_if_no_fixup(NULL, regs, intcode)) + return; + + /* otherwise it's a userspace exception */ + info.si_signo = exception_to_signal_map[intcode >> 3].signo; + info.si_code = exception_to_signal_map[intcode >> 3].si_code; + info.si_errno = 0; + info.si_addr = (void *) regs->pc; + force_sig_info(info.si_signo, &info, current); +} /* * handle NMI @@ -113,10 +220,8 @@ DO_ERROR(SIGTRAP, asmlinkage void nmi(struct pt_regs *regs, enum exception_code code) { /* see if gdbstub wants to deal with it */ -#ifdef CONFIG_GDBSTUB - if (gdbstub_intercept(regs, code)) + if (debugger_intercept(code, SIGQUIT, 0, regs)) return; -#endif printk(KERN_WARNING "--- Register Dump ---\n"); show_registers(regs); @@ -128,29 +233,36 @@ asmlinkage void nmi(struct pt_regs *regs, enum exception_code code) */ void show_trace(unsigned long *sp) { - unsigned long *stack, addr, module_start, module_end; - int i; - - printk(KERN_EMERG "\nCall Trace:"); - - stack = sp; - i = 0; - module_start = VMALLOC_START; - module_end = VMALLOC_END; + unsigned long bottom, stack, addr, fp, raslot; + + printk(KERN_EMERG "\nCall Trace:\n"); + + //stack = (unsigned long)sp; + asm("mov sp,%0" : "=a"(stack)); + asm("mov a3,%0" : "=r"(fp)); + + raslot = ULONG_MAX; + bottom = (stack + THREAD_SIZE) & ~(THREAD_SIZE - 1); + for (; stack < bottom; stack += sizeof(addr)) { + addr = *(unsigned long *)stack; + if (stack == fp) { + if (addr > stack && addr < bottom) { + fp = addr; + raslot = stack + sizeof(addr); + continue; + } + fp = 0; + raslot = ULONG_MAX; + } - while (((long) stack & (THREAD_SIZE - 1)) != 0) { - addr = *stack++; if (__kernel_text_address(addr)) { -#if 1 printk(" [<%08lx>]", addr); + if (stack >= raslot) + raslot = ULONG_MAX; + else + printk(" ?"); print_symbol(" %s", addr); printk("\n"); -#else - if ((i % 6) == 0) - printk(KERN_EMERG " "); - printk("[<%08lx>] ", addr); - i++; -#endif } } @@ -182,17 +294,6 @@ void show_stack(struct task_struct *task, unsigned long *sp) } /* - * the architecture-independent dump_stack generator - */ -void dump_stack(void) -{ - unsigned long stack; - - show_stack(current, &stack); -} -EXPORT_SYMBOL(dump_stack); - -/* * dump the register file in the specified exception frame */ void show_registers_only(struct pt_regs *regs) @@ -323,86 +424,6 @@ void die(const char *str, struct pt_regs *regs, enum exception_code code) } /* - * see if there's a fixup handler we can force a jump to when an exception - * happens due to something kernel code did - */ -int die_if_no_fixup(const char *str, struct pt_regs *regs, - enum exception_code code) -{ - if (user_mode(regs)) - return 0; - - peripheral_leds_display_exception(code); - - switch (code) { - /* see if we can fixup the kernel accessing memory */ - case EXCEP_ITLBMISS: - case EXCEP_DTLBMISS: - case EXCEP_IAERROR: - case EXCEP_DAERROR: - case EXCEP_MEMERR: - case EXCEP_MISALIGN: - case EXCEP_BUSERROR: - case EXCEP_ILLDATACC: - case EXCEP_IOINSACC: - case EXCEP_PRIVINSACC: - case EXCEP_PRIVDATACC: - case EXCEP_DATINSACC: - if (fixup_exception(regs)) - return 1; - case EXCEP_UNIMPINS: - if (regs->pc && *(uint8_t *)regs->pc == 0xff) - if (notify_die(DIE_BREAKPOINT, str, regs, code, 0, 0)) - return 1; - break; - default: - break; - } - - /* see if gdbstub wants to deal with it */ -#ifdef CONFIG_GDBSTUB - if (gdbstub_intercept(regs, code)) - return 1; -#endif - - if (notify_die(DIE_GPF, str, regs, code, 0, 0)) - return 1; - - /* make the process die as the last resort */ - die(str, regs, code); -} - -/* - * handle unsupported syscall instructions (syscall 1-15) - */ -static asmlinkage void unsupported_syscall(struct pt_regs *regs, - enum exception_code code) -{ - struct task_struct *tsk = current; - siginfo_t info; - - /* catch a kernel BUG() */ - if (code == EXCEP_SYSCALL15 && !user_mode(regs)) { - if (report_bug(regs->pc, regs) == BUG_TRAP_TYPE_BUG) { -#ifdef CONFIG_GDBSTUB - gdbstub_intercept(regs, code); -#endif - } - } - - regs->pc -= 2; /* syscall return addr is _after_ the instruction */ - - die_if_no_fixup("An unsupported syscall insn was used by the kernel\n", - regs, code); - - info.si_signo = SIGILL; - info.si_errno = ENOSYS; - info.si_code = ILL_ILLTRP; - info.si_addr = (void *) regs->pc; - force_sig_info(SIGILL, &info, tsk); -} - -/* * display the register file when the stack pointer gets clobbered */ asmlinkage void do_double_fault(struct pt_regs *regs) @@ -481,10 +502,8 @@ asmlinkage void uninitialised_exception(struct pt_regs *regs, { /* see if gdbstub wants to deal with it */ -#ifdef CONFIG_GDBSTUB - if (gdbstub_intercept(regs, code)) + if (debugger_intercept(code, SIGSYS, 0, regs) == 0) return; -#endif peripheral_leds_display_exception(code); printk(KERN_EMERG "Uninitialised Exception 0x%04x\n", code & 0xFFFF); @@ -549,43 +568,43 @@ void __init set_intr_stub(enum exception_code code, void *handler) */ void __init trap_init(void) { - set_excp_vector(EXCEP_TRAP, trap); - set_excp_vector(EXCEP_ISTEP, istep); - set_excp_vector(EXCEP_IBREAK, ibreak); - set_excp_vector(EXCEP_OBREAK, obreak); - - set_excp_vector(EXCEP_PRIVINS, priv_op); - set_excp_vector(EXCEP_UNIMPINS, invalid_op); - set_excp_vector(EXCEP_UNIMPEXINS, invalid_exop); - set_excp_vector(EXCEP_MEMERR, mem_error); + set_excp_vector(EXCEP_TRAP, handle_exception); + set_excp_vector(EXCEP_ISTEP, handle_exception); + set_excp_vector(EXCEP_IBREAK, handle_exception); + set_excp_vector(EXCEP_OBREAK, handle_exception); + + set_excp_vector(EXCEP_PRIVINS, handle_exception); + set_excp_vector(EXCEP_UNIMPINS, handle_exception); + set_excp_vector(EXCEP_UNIMPEXINS, handle_exception); + set_excp_vector(EXCEP_MEMERR, handle_exception); set_excp_vector(EXCEP_MISALIGN, misalignment); - set_excp_vector(EXCEP_BUSERROR, bus_error); - set_excp_vector(EXCEP_ILLINSACC, insn_acc_error); - set_excp_vector(EXCEP_ILLDATACC, data_acc_error); - set_excp_vector(EXCEP_IOINSACC, insn_acc_error); - set_excp_vector(EXCEP_PRIVINSACC, insn_acc_error); - set_excp_vector(EXCEP_PRIVDATACC, data_acc_error); - set_excp_vector(EXCEP_DATINSACC, insn_acc_error); - set_excp_vector(EXCEP_FPU_UNIMPINS, fpu_invalid_op); + set_excp_vector(EXCEP_BUSERROR, handle_exception); + set_excp_vector(EXCEP_ILLINSACC, handle_exception); + set_excp_vector(EXCEP_ILLDATACC, handle_exception); + set_excp_vector(EXCEP_IOINSACC, handle_exception); + set_excp_vector(EXCEP_PRIVINSACC, handle_exception); + set_excp_vector(EXCEP_PRIVDATACC, handle_exception); + set_excp_vector(EXCEP_DATINSACC, handle_exception); + set_excp_vector(EXCEP_FPU_UNIMPINS, handle_exception); set_excp_vector(EXCEP_FPU_OPERATION, fpu_exception); set_excp_vector(EXCEP_NMI, nmi); - set_excp_vector(EXCEP_SYSCALL1, unsupported_syscall); - set_excp_vector(EXCEP_SYSCALL2, unsupported_syscall); - set_excp_vector(EXCEP_SYSCALL3, unsupported_syscall); - set_excp_vector(EXCEP_SYSCALL4, unsupported_syscall); - set_excp_vector(EXCEP_SYSCALL5, unsupported_syscall); - set_excp_vector(EXCEP_SYSCALL6, unsupported_syscall); - set_excp_vector(EXCEP_SYSCALL7, unsupported_syscall); - set_excp_vector(EXCEP_SYSCALL8, unsupported_syscall); - set_excp_vector(EXCEP_SYSCALL9, unsupported_syscall); - set_excp_vector(EXCEP_SYSCALL10, unsupported_syscall); - set_excp_vector(EXCEP_SYSCALL11, unsupported_syscall); - set_excp_vector(EXCEP_SYSCALL12, unsupported_syscall); - set_excp_vector(EXCEP_SYSCALL13, unsupported_syscall); - set_excp_vector(EXCEP_SYSCALL14, unsupported_syscall); - set_excp_vector(EXCEP_SYSCALL15, unsupported_syscall); + set_excp_vector(EXCEP_SYSCALL1, handle_exception); + set_excp_vector(EXCEP_SYSCALL2, handle_exception); + set_excp_vector(EXCEP_SYSCALL3, handle_exception); + set_excp_vector(EXCEP_SYSCALL4, handle_exception); + set_excp_vector(EXCEP_SYSCALL5, handle_exception); + set_excp_vector(EXCEP_SYSCALL6, handle_exception); + set_excp_vector(EXCEP_SYSCALL7, handle_exception); + set_excp_vector(EXCEP_SYSCALL8, handle_exception); + set_excp_vector(EXCEP_SYSCALL9, handle_exception); + set_excp_vector(EXCEP_SYSCALL10, handle_exception); + set_excp_vector(EXCEP_SYSCALL11, handle_exception); + set_excp_vector(EXCEP_SYSCALL12, handle_exception); + set_excp_vector(EXCEP_SYSCALL13, handle_exception); + set_excp_vector(EXCEP_SYSCALL14, handle_exception); + set_excp_vector(EXCEP_SYSCALL15, handle_exception); } /* diff --git a/arch/mn10300/kernel/vmlinux.lds.S b/arch/mn10300/kernel/vmlinux.lds.S index febbeee7f2f..13c4814c29f 100644 --- a/arch/mn10300/kernel/vmlinux.lds.S +++ b/arch/mn10300/kernel/vmlinux.lds.S @@ -44,6 +44,7 @@ SECTIONS RO_DATA(PAGE_SIZE) /* writeable */ + _sdata = .; /* Start of rw data section */ RW_DATA_SECTION(32, PAGE_SIZE, THREAD_SIZE) _edata = .; @@ -70,7 +71,7 @@ SECTIONS .exit.text : { EXIT_TEXT; } .exit.data : { EXIT_DATA; } - PERCPU(PAGE_SIZE) + PERCPU_SECTION(32) . = ALIGN(PAGE_SIZE); __init_end = .; /* freed after init ends here */ diff --git a/arch/mn10300/lib/bitops.c b/arch/mn10300/lib/bitops.c index a66c6cdaf44..37309cdb758 100644 --- a/arch/mn10300/lib/bitops.c +++ b/arch/mn10300/lib/bitops.c @@ -10,7 +10,6 @@ */ #include <linux/module.h> #include <asm/bitops.h> -#include <asm/system.h> /* * try flipping a bit using BSET and BCLR diff --git a/arch/mn10300/mm/Kconfig.cache b/arch/mn10300/mm/Kconfig.cache index c4fd923a55a..bfbe52691f2 100644 --- a/arch/mn10300/mm/Kconfig.cache +++ b/arch/mn10300/mm/Kconfig.cache @@ -99,3 +99,49 @@ config MN10300_CACHE_INV_ICACHE help Set if we need the icache to be invalidated, even if the dcache is in write-through mode and doesn't need flushing. + +# +# The kernel debugger gets its own separate cache flushing functions +# +config MN10300_DEBUGGER_CACHE_FLUSH_BY_TAG + def_bool y if KERNEL_DEBUGGER && \ + MN10300_CACHE_WBACK && \ + !MN10300_CACHE_SNOOP && \ + MN10300_CACHE_MANAGE_BY_TAG + help + Set if the debugger needs to flush the dcache and invalidate the + icache using the cache tag registers to make breakpoints work. + +config MN10300_DEBUGGER_CACHE_FLUSH_BY_REG + def_bool y if KERNEL_DEBUGGER && \ + MN10300_CACHE_WBACK && \ + !MN10300_CACHE_SNOOP && \ + MN10300_CACHE_MANAGE_BY_REG + help + Set if the debugger needs to flush the dcache and invalidate the + icache using automatic purge registers to make breakpoints work. + +config MN10300_DEBUGGER_CACHE_INV_BY_TAG + def_bool y if KERNEL_DEBUGGER && \ + MN10300_CACHE_WTHRU && \ + !MN10300_CACHE_SNOOP && \ + MN10300_CACHE_MANAGE_BY_TAG + help + Set if the debugger needs to invalidate the icache using the cache + tag registers to make breakpoints work. + +config MN10300_DEBUGGER_CACHE_INV_BY_REG + def_bool y if KERNEL_DEBUGGER && \ + MN10300_CACHE_WTHRU && \ + !MN10300_CACHE_SNOOP && \ + MN10300_CACHE_MANAGE_BY_REG + help + Set if the debugger needs to invalidate the icache using automatic + purge registers to make breakpoints work. + +config MN10300_DEBUGGER_CACHE_NO_FLUSH + def_bool y if KERNEL_DEBUGGER && \ + (MN10300_CACHE_DISABLED || MN10300_CACHE_SNOOP) + help + Set if the debugger does not need to flush the dcache and/or + invalidate the icache to make breakpoints work. diff --git a/arch/mn10300/mm/Makefile b/arch/mn10300/mm/Makefile index 203fee23f7d..11f38466ac2 100644 --- a/arch/mn10300/mm/Makefile +++ b/arch/mn10300/mm/Makefile @@ -13,6 +13,15 @@ cacheflush-$(CONFIG_MN10300_CACHE_INV_BY_REG) += cache-inv-by-reg.o cacheflush-$(CONFIG_MN10300_CACHE_FLUSH_BY_TAG) += cache-flush-by-tag.o cacheflush-$(CONFIG_MN10300_CACHE_FLUSH_BY_REG) += cache-flush-by-reg.o +cacheflush-$(CONFIG_MN10300_DEBUGGER_CACHE_FLUSH_BY_TAG) += \ + cache-dbg-flush-by-tag.o cache-dbg-inv-by-tag.o +cacheflush-$(CONFIG_MN10300_DEBUGGER_CACHE_FLUSH_BY_REG) += \ + cache-dbg-flush-by-reg.o +cacheflush-$(CONFIG_MN10300_DEBUGGER_CACHE_INV_BY_TAG) += \ + cache-dbg-inv-by-tag.o cache-dbg-inv.o +cacheflush-$(CONFIG_MN10300_DEBUGGER_CACHE_INV_BY_REG) += \ + cache-dbg-inv-by-reg.o cache-dbg-inv.o + cacheflush-$(CONFIG_MN10300_CACHE_DISABLED) := cache-disabled.o obj-y := \ diff --git a/arch/mn10300/mm/cache-dbg-flush-by-reg.S b/arch/mn10300/mm/cache-dbg-flush-by-reg.S new file mode 100644 index 00000000000..a775ea5d7ce --- /dev/null +++ b/arch/mn10300/mm/cache-dbg-flush-by-reg.S @@ -0,0 +1,160 @@ +/* MN10300 CPU cache invalidation routines, using automatic purge registers + * + * Copyright (C) 2011 Red Hat, Inc. All Rights Reserved. + * Written by David Howells (dhowells@redhat.com) + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public Licence + * as published by the Free Software Foundation; either version + * 2 of the Licence, or (at your option) any later version. + */ +#include <linux/sys.h> +#include <linux/linkage.h> +#include <asm/smp.h> +#include <asm/page.h> +#include <asm/cache.h> +#include <asm/irqflags.h> +#include <asm/cacheflush.h> +#include "cache.inc" + + .am33_2 + +############################################################################### +# +# void debugger_local_cache_flushinv(void) +# Flush the entire data cache back to RAM and invalidate the icache +# +############################################################################### + ALIGN + .globl debugger_local_cache_flushinv + .type debugger_local_cache_flushinv,@function +debugger_local_cache_flushinv: + # + # firstly flush the dcache + # + movhu (CHCTR),d0 + btst CHCTR_DCEN|CHCTR_ICEN,d0 + beq debugger_local_cache_flushinv_end + + mov DCPGCR,a0 + + mov epsw,d1 + and ~EPSW_IE,epsw + or EPSW_NMID,epsw + nop + + btst CHCTR_DCEN,d0 + beq debugger_local_cache_flushinv_no_dcache + + # wait for busy bit of area purge + setlb + mov (a0),d0 + btst DCPGCR_DCPGBSY,d0 + lne + + # set mask + clr d0 + mov d0,(DCPGMR) + + # area purge + # + # DCPGCR = DCPGCR_DCP + # + mov DCPGCR_DCP,d0 + mov d0,(a0) + + # wait for busy bit of area purge + setlb + mov (a0),d0 + btst DCPGCR_DCPGBSY,d0 + lne + +debugger_local_cache_flushinv_no_dcache: + # + # secondly, invalidate the icache if it is enabled + # + mov CHCTR,a0 + movhu (a0),d0 + btst CHCTR_ICEN,d0 + beq debugger_local_cache_flushinv_done + + invalidate_icache 0 + +debugger_local_cache_flushinv_done: + mov d1,epsw + +debugger_local_cache_flushinv_end: + ret [],0 + .size debugger_local_cache_flushinv,.-debugger_local_cache_flushinv + +############################################################################### +# +# void debugger_local_cache_flushinv_one(u8 *addr) +# +# Invalidate one particular cacheline if it's in the icache +# +############################################################################### + ALIGN + .globl debugger_local_cache_flushinv_one + .type debugger_local_cache_flushinv_one,@function +debugger_local_cache_flushinv_one: + movhu (CHCTR),d1 + btst CHCTR_DCEN|CHCTR_ICEN,d1 + beq debugger_local_cache_flushinv_one_end + btst CHCTR_DCEN,d1 + beq debugger_local_cache_flushinv_one_no_dcache + + # round cacheline addr down + and L1_CACHE_TAG_MASK,d0 + mov d0,a1 + mov d0,d1 + + # determine the dcache purge control reg address + mov DCACHE_PURGE(0,0),a0 + and L1_CACHE_TAG_ENTRY,d0 + add d0,a0 + + # retain valid entries in the cache + or L1_CACHE_TAG_VALID,d1 + + # conditionally purge this line in all ways + mov d1,(L1_CACHE_WAYDISP*0,a0) + +debugger_local_cache_flushinv_one_no_dcache: + # + # now try to flush the icache + # + mov CHCTR,a0 + movhu (a0),d0 + btst CHCTR_ICEN,d0 + beq debugger_local_cache_flushinv_one_end + + LOCAL_CLI_SAVE(d1) + + mov ICIVCR,a0 + + # wait for the invalidator to quiesce + setlb + mov (a0),d0 + btst ICIVCR_ICIVBSY,d0 + lne + + # set the mask + mov L1_CACHE_TAG_MASK,d0 + mov d0,(ICIVMR) + + # invalidate the cache line at the given address + or ICIVCR_ICI,a1 + mov a1,(a0) + + # wait for the invalidator to quiesce again + setlb + mov (a0),d0 + btst ICIVCR_ICIVBSY,d0 + lne + + LOCAL_IRQ_RESTORE(d1) + +debugger_local_cache_flushinv_one_end: + ret [],0 + .size debugger_local_cache_flushinv_one,.-debugger_local_cache_flushinv_one diff --git a/arch/mn10300/mm/cache-dbg-flush-by-tag.S b/arch/mn10300/mm/cache-dbg-flush-by-tag.S new file mode 100644 index 00000000000..bf56930e6e7 --- /dev/null +++ b/arch/mn10300/mm/cache-dbg-flush-by-tag.S @@ -0,0 +1,114 @@ +/* MN10300 CPU cache invalidation routines, using direct tag flushing + * + * Copyright (C) 2011 Red Hat, Inc. All Rights Reserved. + * Written by David Howells (dhowells@redhat.com) + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public Licence + * as published by the Free Software Foundation; either version + * 2 of the Licence, or (at your option) any later version. + */ +#include <linux/sys.h> +#include <linux/linkage.h> +#include <asm/smp.h> +#include <asm/page.h> +#include <asm/cache.h> +#include <asm/irqflags.h> +#include <asm/cacheflush.h> +#include "cache.inc" + + .am33_2 + +############################################################################### +# +# void debugger_local_cache_flushinv(void) +# +# Flush the entire data cache back to RAM and invalidate the icache +# +############################################################################### + ALIGN + .globl debugger_local_cache_flushinv + .type debugger_local_cache_flushinv,@function +debugger_local_cache_flushinv: + # + # firstly flush the dcache + # + movhu (CHCTR),d0 + btst CHCTR_DCEN|CHCTR_ICEN,d0 + beq debugger_local_cache_flushinv_end + + btst CHCTR_DCEN,d0 + beq debugger_local_cache_flushinv_no_dcache + + # read the addresses tagged in the cache's tag RAM and attempt to flush + # those addresses specifically + # - we rely on the hardware to filter out invalid tag entry addresses + mov DCACHE_TAG(0,0),a0 # dcache tag RAM access address + mov DCACHE_PURGE(0,0),a1 # dcache purge request address + mov L1_CACHE_NWAYS*L1_CACHE_NENTRIES,e0 # total number of entries + +mn10300_local_dcache_flush_loop: + mov (a0),d0 + and L1_CACHE_TAG_MASK,d0 + or L1_CACHE_TAG_VALID,d0 # retain valid entries in the + # cache + mov d0,(a1) # conditional purge + + add L1_CACHE_BYTES,a0 + add L1_CACHE_BYTES,a1 + add -1,e0 + bne mn10300_local_dcache_flush_loop + +debugger_local_cache_flushinv_no_dcache: + # + # secondly, invalidate the icache if it is enabled + # + mov CHCTR,a0 + movhu (a0),d0 + btst CHCTR_ICEN,d0 + beq debugger_local_cache_flushinv_end + + invalidate_icache 1 + +debugger_local_cache_flushinv_end: + ret [],0 + .size debugger_local_cache_flushinv,.-debugger_local_cache_flushinv + +############################################################################### +# +# void debugger_local_cache_flushinv_one(u8 *addr) +# +# Invalidate one particular cacheline if it's in the icache +# +############################################################################### + ALIGN + .globl debugger_local_cache_flushinv_one + .type debugger_local_cache_flushinv_one,@function +debugger_local_cache_flushinv_one: + movhu (CHCTR),d1 + btst CHCTR_DCEN|CHCTR_ICEN,d1 + beq debugger_local_cache_flushinv_one_end + btst CHCTR_DCEN,d1 + beq debugger_local_cache_flushinv_one_icache + + # round cacheline addr down + and L1_CACHE_TAG_MASK,d0 + mov d0,a1 + + # determine the dcache purge control reg address + mov DCACHE_PURGE(0,0),a0 + and L1_CACHE_TAG_ENTRY,d0 + add d0,a0 + + # retain valid entries in the cache + or L1_CACHE_TAG_VALID,a1 + + # conditionally purge this line in all ways + mov a1,(L1_CACHE_WAYDISP*0,a0) + + # now go and do the icache + bra debugger_local_cache_flushinv_one_icache + +debugger_local_cache_flushinv_one_end: + ret [],0 + .size debugger_local_cache_flushinv_one,.-debugger_local_cache_flushinv_one diff --git a/arch/mn10300/mm/cache-dbg-inv-by-reg.S b/arch/mn10300/mm/cache-dbg-inv-by-reg.S new file mode 100644 index 00000000000..c4e6252941b --- /dev/null +++ b/arch/mn10300/mm/cache-dbg-inv-by-reg.S @@ -0,0 +1,69 @@ +/* MN10300 CPU cache invalidation routines, using automatic purge registers + * + * Copyright (C) 2011 Red Hat, Inc. All Rights Reserved. + * Written by David Howells (dhowells@redhat.com) + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public Licence + * as published by the Free Software Foundation; either version + * 2 of the Licence, or (at your option) any later version. + */ +#include <linux/sys.h> +#include <linux/linkage.h> +#include <asm/cache.h> +#include <asm/irqflags.h> +#include <asm/cacheflush.h> +#include "cache.inc" + + .am33_2 + + .globl debugger_local_cache_flushinv_one + +############################################################################### +# +# void debugger_local_cache_flushinv_one(u8 *addr) +# +# Invalidate one particular cacheline if it's in the icache +# +############################################################################### + ALIGN + .globl debugger_local_cache_flushinv_one + .type debugger_local_cache_flushinv_one,@function +debugger_local_cache_flushinv_one: + mov d0,a1 + + mov CHCTR,a0 + movhu (a0),d0 + btst CHCTR_ICEN,d0 + beq mn10300_local_icache_inv_range_reg_end + + LOCAL_CLI_SAVE(d1) + + mov ICIVCR,a0 + + # wait for the invalidator to quiesce + setlb + mov (a0),d0 + btst ICIVCR_ICIVBSY,d0 + lne + + # set the mask + mov ~L1_CACHE_TAG_MASK,d0 + mov d0,(ICIVMR) + + # invalidate the cache line at the given address + and ~L1_CACHE_TAG_MASK,a1 + or ICIVCR_ICI,a1 + mov a1,(a0) + + # wait for the invalidator to quiesce again + setlb + mov (a0),d0 + btst ICIVCR_ICIVBSY,d0 + lne + + LOCAL_IRQ_RESTORE(d1) + +mn10300_local_icache_inv_range_reg_end: + ret [],0 + .size debugger_local_cache_flushinv_one,.-debugger_local_cache_flushinv_one diff --git a/arch/mn10300/mm/cache-dbg-inv-by-tag.S b/arch/mn10300/mm/cache-dbg-inv-by-tag.S new file mode 100644 index 00000000000..d8ec821e5f8 --- /dev/null +++ b/arch/mn10300/mm/cache-dbg-inv-by-tag.S @@ -0,0 +1,120 @@ +/* MN10300 CPU cache invalidation routines, using direct tag flushing + * + * Copyright (C) 2011 Red Hat, Inc. All Rights Reserved. + * Written by David Howells (dhowells@redhat.com) + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public Licence + * as published by the Free Software Foundation; either version + * 2 of the Licence, or (at your option) any later version. + */ +#include <linux/sys.h> +#include <linux/linkage.h> +#include <asm/smp.h> +#include <asm/page.h> +#include <asm/cache.h> +#include <asm/irqflags.h> +#include <asm/cacheflush.h> +#include "cache.inc" + + .am33_2 + + .globl debugger_local_cache_flushinv_one_icache + +############################################################################### +# +# void debugger_local_cache_flushinv_one(u8 *addr) +# +# Invalidate one particular cacheline if it's in the icache +# +############################################################################### + ALIGN + .globl debugger_local_cache_flushinv_one_icache + .type debugger_local_cache_flushinv_one_icache,@function +debugger_local_cache_flushinv_one_icache: + movm [d3,a2],(sp) + + mov CHCTR,a2 + movhu (a2),d0 + btst CHCTR_ICEN,d0 + beq debugger_local_cache_flushinv_one_icache_end + + mov d0,a1 + and L1_CACHE_TAG_MASK,a1 + + # read the tags from the tag RAM, and if they indicate a matching valid + # cache line then we invalidate that line + mov ICACHE_TAG(0,0),a0 + mov a1,d0 + and L1_CACHE_TAG_ENTRY,d0 + add d0,a0 # starting icache tag RAM + # access address + + and ~(L1_CACHE_DISPARITY-1),a1 # determine comparator base + or L1_CACHE_TAG_VALID,a1 + mov L1_CACHE_TAG_ADDRESS|L1_CACHE_TAG_VALID,d1 + + LOCAL_CLI_SAVE(d3) + + # disable the icache + movhu (a2),d0 + and ~CHCTR_ICEN,d0 + movhu d0,(a2) + + # and wait for it to calm down + setlb + movhu (a2),d0 + btst CHCTR_ICBUSY,d0 + lne + + # check all the way tags for this cache entry + mov (a0),d0 # read the tag in the way 0 slot + xor a1,d0 + and d1,d0 + beq debugger_local_icache_kill # jump if matched + + add L1_CACHE_WAYDISP,a0 + mov (a0),d0 # read the tag in the way 1 slot + xor a1,d0 + and d1,d0 + beq debugger_local_icache_kill # jump if matched + + add L1_CACHE_WAYDISP,a0 + mov (a0),d0 # read the tag in the way 2 slot + xor a1,d0 + and d1,d0 + beq debugger_local_icache_kill # jump if matched + + add L1_CACHE_WAYDISP,a0 + mov (a0),d0 # read the tag in the way 3 slot + xor a1,d0 + and d1,d0 + bne debugger_local_icache_finish # jump if not matched + +debugger_local_icache_kill: + mov d0,(a0) # kill the tag (D0 is 0 at this point) + +debugger_local_icache_finish: + # wait for the cache to finish what it's doing + setlb + movhu (a2),d0 + btst CHCTR_ICBUSY,d0 + lne + + # and reenable it + or CHCTR_ICEN,d0 + movhu d0,(a2) + movhu (a2),d0 + + # re-enable interrupts + LOCAL_IRQ_RESTORE(d3) + +debugger_local_cache_flushinv_one_icache_end: + ret [d3,a2],8 + .size debugger_local_cache_flushinv_one_icache,.-debugger_local_cache_flushinv_one_icache + +#ifdef CONFIG_MN10300_DEBUGGER_CACHE_INV_BY_TAG + .globl debugger_local_cache_flushinv_one + .type debugger_local_cache_flushinv_one,@function +debugger_local_cache_flushinv_one = debugger_local_cache_flushinv_one_icache +#endif diff --git a/arch/mn10300/mm/cache-dbg-inv.S b/arch/mn10300/mm/cache-dbg-inv.S new file mode 100644 index 00000000000..eba2d6dca06 --- /dev/null +++ b/arch/mn10300/mm/cache-dbg-inv.S @@ -0,0 +1,47 @@ +/* MN10300 CPU cache invalidation routines + * + * Copyright (C) 2011 Red Hat, Inc. All Rights Reserved. + * Written by David Howells (dhowells@redhat.com) + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public Licence + * as published by the Free Software Foundation; either version + * 2 of the Licence, or (at your option) any later version. + */ +#include <linux/sys.h> +#include <linux/linkage.h> +#include <asm/smp.h> +#include <asm/page.h> +#include <asm/cache.h> +#include <asm/irqflags.h> +#include <asm/cacheflush.h> +#include "cache.inc" + + .am33_2 + + .globl debugger_local_cache_flushinv + +############################################################################### +# +# void debugger_local_cache_flushinv(void) +# +# Invalidate the entire icache +# +############################################################################### + ALIGN + .globl debugger_local_cache_flushinv + .type debugger_local_cache_flushinv,@function +debugger_local_cache_flushinv: + # + # we only need to invalidate the icache in this cache mode + # + mov CHCTR,a0 + movhu (a0),d0 + btst CHCTR_ICEN,d0 + beq debugger_local_cache_flushinv_end + + invalidate_icache 1 + +debugger_local_cache_flushinv_end: + ret [],0 + .size debugger_local_cache_flushinv,.-debugger_local_cache_flushinv diff --git a/arch/mn10300/mm/cache-flush-by-tag.S b/arch/mn10300/mm/cache-flush-by-tag.S index 5cd6a27dd63..1ddc0684924 100644 --- a/arch/mn10300/mm/cache-flush-by-tag.S +++ b/arch/mn10300/mm/cache-flush-by-tag.S @@ -62,7 +62,7 @@ mn10300_local_dcache_flush: mn10300_local_dcache_flush_loop: mov (a0),d0 - and L1_CACHE_TAG_ADDRESS|L1_CACHE_TAG_ENTRY,d0 + and L1_CACHE_TAG_MASK,d0 or L1_CACHE_TAG_VALID,d0 # retain valid entries in the # cache mov d0,(a1) # conditional purge @@ -112,11 +112,11 @@ mn10300_local_dcache_flush_range: 1: # round start addr down - and L1_CACHE_TAG_ADDRESS|L1_CACHE_TAG_ENTRY,d0 + and L1_CACHE_TAG_MASK,d0 mov d0,a1 add L1_CACHE_BYTES,d1 # round end addr up - and L1_CACHE_TAG_ADDRESS|L1_CACHE_TAG_ENTRY,d1 + and L1_CACHE_TAG_MASK,d1 # write a request to flush all instances of an address from the cache mov DCACHE_PURGE(0,0),a0 @@ -215,12 +215,11 @@ mn10300_local_dcache_flush_inv_range: bra mn10300_local_dcache_flush_inv 1: - and L1_CACHE_TAG_ADDRESS|L1_CACHE_TAG_ENTRY,d0 # round start - # addr down + and L1_CACHE_TAG_MASK,d0 # round start addr down mov d0,a1 - add L1_CACHE_BYTES,d1 # round end addr up - and L1_CACHE_TAG_ADDRESS|L1_CACHE_TAG_ENTRY,d1 + add L1_CACHE_BYTES,d1 # round end addr up + and L1_CACHE_TAG_MASK,d1 # write a request to flush and invalidate all instances of an address # from the cache diff --git a/arch/mn10300/mm/cache-inv-by-reg.S b/arch/mn10300/mm/cache-inv-by-reg.S index c8950861ed7..a60825b91e7 100644 --- a/arch/mn10300/mm/cache-inv-by-reg.S +++ b/arch/mn10300/mm/cache-inv-by-reg.S @@ -15,6 +15,7 @@ #include <asm/cache.h> #include <asm/irqflags.h> #include <asm/cacheflush.h> +#include "cache.inc" #define mn10300_local_dcache_inv_range_intr_interval \ +((1 << MN10300_DCACHE_INV_RANGE_INTR_LOG2_INTERVAL) - 1) @@ -62,10 +63,7 @@ mn10300_local_icache_inv: btst CHCTR_ICEN,d0 beq mn10300_local_icache_inv_end - # invalidate - or CHCTR_ICINV,d0 - movhu d0,(a0) - movhu (a0),d0 + invalidate_icache 1 mn10300_local_icache_inv_end: ret [],0 @@ -87,11 +85,8 @@ mn10300_local_dcache_inv: btst CHCTR_DCEN,d0 beq mn10300_local_dcache_inv_end - # invalidate - or CHCTR_DCINV,d0 - movhu d0,(a0) - movhu (a0),d0 - + invalidate_dcache 1 + mn10300_local_dcache_inv_end: ret [],0 .size mn10300_local_dcache_inv,.-mn10300_local_dcache_inv @@ -121,9 +116,9 @@ mn10300_local_dcache_inv_range: # and if they're not cacheline-aligned, we must flush any bits outside # the range that share cachelines with stuff inside the range #ifdef CONFIG_MN10300_CACHE_WBACK - btst ~(L1_CACHE_BYTES-1),d0 + btst ~L1_CACHE_TAG_MASK,d0 bne 1f - btst ~(L1_CACHE_BYTES-1),d1 + btst ~L1_CACHE_TAG_MASK,d1 beq 2f 1: bra mn10300_local_dcache_flush_inv_range @@ -141,12 +136,11 @@ mn10300_local_dcache_inv_range: # writeback mode, in which case we would be in flush and invalidate by # now #ifndef CONFIG_MN10300_CACHE_WBACK - and L1_CACHE_TAG_ADDRESS|L1_CACHE_TAG_ENTRY,d0 # round start - # addr down + and L1_CACHE_TAG_MASK,d0 # round start addr down mov L1_CACHE_BYTES-1,d2 add d2,d1 - and L1_CACHE_TAG_ADDRESS|L1_CACHE_TAG_ENTRY,d1 # round end addr up + and L1_CACHE_TAG_MASK,d1 # round end addr up #endif /* !CONFIG_MN10300_CACHE_WBACK */ sub d0,d1,d2 # calculate the total size diff --git a/arch/mn10300/mm/cache-inv-by-tag.S b/arch/mn10300/mm/cache-inv-by-tag.S index e9713b40c0f..ccedce9c144 100644 --- a/arch/mn10300/mm/cache-inv-by-tag.S +++ b/arch/mn10300/mm/cache-inv-by-tag.S @@ -15,6 +15,7 @@ #include <asm/cache.h> #include <asm/irqflags.h> #include <asm/cacheflush.h> +#include "cache.inc" #define mn10300_local_dcache_inv_range_intr_interval \ +((1 << MN10300_DCACHE_INV_RANGE_INTR_LOG2_INTERVAL) - 1) @@ -70,43 +71,7 @@ mn10300_local_icache_inv: btst CHCTR_ICEN,d0 beq mn10300_local_icache_inv_end -#if defined(CONFIG_AM33_2) || defined(CONFIG_AM33_3) - LOCAL_CLI_SAVE(d1) - - # disable the icache - and ~CHCTR_ICEN,d0 - movhu d0,(a0) - - # and wait for it to calm down - setlb - movhu (a0),d0 - btst CHCTR_ICBUSY,d0 - lne - - # invalidate - or CHCTR_ICINV,d0 - movhu d0,(a0) - - # wait for the cache to finish - mov CHCTR,a0 - setlb - movhu (a0),d0 - btst CHCTR_ICBUSY,d0 - lne - - # and reenable it - and ~CHCTR_ICINV,d0 - or CHCTR_ICEN,d0 - movhu d0,(a0) - movhu (a0),d0 - - LOCAL_IRQ_RESTORE(d1) -#else /* CONFIG_AM33_2 || CONFIG_AM33_3 */ - # invalidate - or CHCTR_ICINV,d0 - movhu d0,(a0) - movhu (a0),d0 -#endif /* CONFIG_AM33_2 || CONFIG_AM33_3 */ + invalidate_icache 1 mn10300_local_icache_inv_end: ret [],0 @@ -128,43 +93,7 @@ mn10300_local_dcache_inv: btst CHCTR_DCEN,d0 beq mn10300_local_dcache_inv_end -#if defined(CONFIG_AM33_2) || defined(CONFIG_AM33_3) - LOCAL_CLI_SAVE(d1) - - # disable the dcache - and ~CHCTR_DCEN,d0 - movhu d0,(a0) - - # and wait for it to calm down - setlb - movhu (a0),d0 - btst CHCTR_DCBUSY,d0 - lne - - # invalidate - or CHCTR_DCINV,d0 - movhu d0,(a0) - - # wait for the cache to finish - mov CHCTR,a0 - setlb - movhu (a0),d0 - btst CHCTR_DCBUSY,d0 - lne - - # and reenable it - and ~CHCTR_DCINV,d0 - or CHCTR_DCEN,d0 - movhu d0,(a0) - movhu (a0),d0 - - LOCAL_IRQ_RESTORE(d1) -#else /* CONFIG_AM33_2 || CONFIG_AM33_3 */ - # invalidate - or CHCTR_DCINV,d0 - movhu d0,(a0) - movhu (a0),d0 -#endif /* CONFIG_AM33_2 || CONFIG_AM33_3 */ + invalidate_dcache 1 mn10300_local_dcache_inv_end: ret [],0 @@ -195,9 +124,9 @@ mn10300_local_dcache_inv_range: # and if they're not cacheline-aligned, we must flush any bits outside # the range that share cachelines with stuff inside the range #ifdef CONFIG_MN10300_CACHE_WBACK - btst ~(L1_CACHE_BYTES-1),d0 + btst ~L1_CACHE_TAG_MASK,d0 bne 1f - btst ~(L1_CACHE_BYTES-1),d1 + btst ~L1_CACHE_TAG_MASK,d1 beq 2f 1: bra mn10300_local_dcache_flush_inv_range @@ -212,11 +141,10 @@ mn10300_local_dcache_inv_range: beq mn10300_local_dcache_inv_range_end #ifndef CONFIG_MN10300_CACHE_WBACK - and L1_CACHE_TAG_ADDRESS|L1_CACHE_TAG_ENTRY,d0 # round start - # addr down + and L1_CACHE_TAG_MASK,d0 # round start addr down add L1_CACHE_BYTES,d1 # round end addr up - and L1_CACHE_TAG_ADDRESS|L1_CACHE_TAG_ENTRY,d1 + and L1_CACHE_TAG_MASK,d1 #endif /* !CONFIG_MN10300_CACHE_WBACK */ mov d0,a1 diff --git a/arch/mn10300/mm/cache-inv-icache.c b/arch/mn10300/mm/cache-inv-icache.c index a8933a60b2d..a6b63dde603 100644 --- a/arch/mn10300/mm/cache-inv-icache.c +++ b/arch/mn10300/mm/cache-inv-icache.c @@ -69,7 +69,7 @@ static void flush_icache_page_range(unsigned long start, unsigned long end) /* invalidate the icache coverage on that region */ mn10300_local_icache_inv_range2(addr + off, size); - smp_cache_call(SMP_ICACHE_INV_FLUSH_RANGE, start, end); + smp_cache_call(SMP_ICACHE_INV_RANGE, start, end); } /** @@ -101,7 +101,7 @@ void flush_icache_range(unsigned long start, unsigned long end) * directly */ start_page = (start >= 0x80000000UL) ? start : 0x80000000UL; mn10300_icache_inv_range(start_page, end); - smp_cache_call(SMP_ICACHE_INV_FLUSH_RANGE, start, end); + smp_cache_call(SMP_ICACHE_INV_RANGE, start, end); if (start_page == start) goto done; end = start_page; diff --git a/arch/mn10300/mm/cache-smp.c b/arch/mn10300/mm/cache-smp.c index 4a6e9a4b5b2..2d23b9eeee6 100644 --- a/arch/mn10300/mm/cache-smp.c +++ b/arch/mn10300/mm/cache-smp.c @@ -74,7 +74,7 @@ void smp_cache_interrupt(void) break; } - cpu_clear(smp_processor_id(), smp_cache_ipi_map); + cpumask_clear_cpu(smp_processor_id(), &smp_cache_ipi_map); } /** @@ -94,12 +94,12 @@ void smp_cache_call(unsigned long opr_mask, smp_cache_mask = opr_mask; smp_cache_start = start; smp_cache_end = end; - smp_cache_ipi_map = cpu_online_map; - cpu_clear(smp_processor_id(), smp_cache_ipi_map); + cpumask_copy(&smp_cache_ipi_map, cpu_online_mask); + cpumask_clear_cpu(smp_processor_id(), &smp_cache_ipi_map); send_IPI_allbutself(FLUSH_CACHE_IPI); - while (!cpus_empty(smp_cache_ipi_map)) + while (!cpumask_empty(&smp_cache_ipi_map)) /* nothing. lockup detection does not belong here */ mb(); } diff --git a/arch/mn10300/mm/cache.inc b/arch/mn10300/mm/cache.inc new file mode 100644 index 00000000000..394a119b9c7 --- /dev/null +++ b/arch/mn10300/mm/cache.inc @@ -0,0 +1,133 @@ +/* MN10300 CPU core caching macros -*- asm -*- + * + * Copyright (C) 2007 Red Hat, Inc. All Rights Reserved. + * Written by David Howells (dhowells@redhat.com) + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public Licence + * as published by the Free Software Foundation; either version + * 2 of the Licence, or (at your option) any later version. + */ + + +############################################################################### +# +# Invalidate the instruction cache. +# A0: Should hold CHCTR +# D0: Should have been read from CHCTR +# D1: Will be clobbered +# +# On some cores it is necessary to disable the icache whilst we do this. +# +############################################################################### + .macro invalidate_icache,disable_irq + +#if defined(CONFIG_AM33_2) || defined(CONFIG_AM33_3) + .if \disable_irq + # don't want an interrupt routine seeing a disabled cache + mov epsw,d1 + and ~EPSW_IE,epsw + or EPSW_NMID,epsw + nop + nop + .endif + + # disable the icache + and ~CHCTR_ICEN,d0 + movhu d0,(a0) + + # and wait for it to calm down + setlb + movhu (a0),d0 + btst CHCTR_ICBUSY,d0 + lne + + # invalidate + or CHCTR_ICINV,d0 + movhu d0,(a0) + + # wait for the cache to finish + setlb + movhu (a0),d0 + btst CHCTR_ICBUSY,d0 + lne + + # and reenable it + or CHCTR_ICEN,d0 + movhu d0,(a0) + movhu (a0),d0 + + .if \disable_irq + LOCAL_IRQ_RESTORE(d1) + .endif + +#else /* CONFIG_AM33_2 || CONFIG_AM33_3 */ + + # invalidate + or CHCTR_ICINV,d0 + movhu d0,(a0) + movhu (a0),d0 + +#endif /* CONFIG_AM33_2 || CONFIG_AM33_3 */ + .endm + +############################################################################### +# +# Invalidate the data cache. +# A0: Should hold CHCTR +# D0: Should have been read from CHCTR +# D1: Will be clobbered +# +# On some cores it is necessary to disable the dcache whilst we do this. +# +############################################################################### + .macro invalidate_dcache,disable_irq + +#if defined(CONFIG_AM33_2) || defined(CONFIG_AM33_3) + .if \disable_irq + # don't want an interrupt routine seeing a disabled cache + mov epsw,d1 + and ~EPSW_IE,epsw + or EPSW_NMID,epsw + nop + nop + .endif + + # disable the dcache + and ~CHCTR_DCEN,d0 + movhu d0,(a0) + + # and wait for it to calm down + setlb + movhu (a0),d0 + btst CHCTR_DCBUSY,d0 + lne + + # invalidate + or CHCTR_DCINV,d0 + movhu d0,(a0) + + # wait for the cache to finish + setlb + movhu (a0),d0 + btst CHCTR_DCBUSY,d0 + lne + + # and reenable it + or CHCTR_DCEN,d0 + movhu d0,(a0) + movhu (a0),d0 + + .if \disable_irq + LOCAL_IRQ_RESTORE(d1) + .endif + +#else /* CONFIG_AM33_2 || CONFIG_AM33_3 */ + + # invalidate + or CHCTR_DCINV,d0 + movhu d0,(a0) + movhu (a0),d0 + +#endif /* CONFIG_AM33_2 || CONFIG_AM33_3 */ + .endm diff --git a/arch/mn10300/mm/dma-alloc.c b/arch/mn10300/mm/dma-alloc.c index 159acb02cfd..e244ebe637e 100644 --- a/arch/mn10300/mm/dma-alloc.c +++ b/arch/mn10300/mm/dma-alloc.c @@ -15,6 +15,7 @@ #include <linux/string.h> #include <linux/pci.h> #include <linux/gfp.h> +#include <linux/export.h> #include <asm/io.h> static unsigned long pci_sram_allocated = 0xbc000000; diff --git a/arch/mn10300/mm/fault.c b/arch/mn10300/mm/fault.c index 59c3da49d9d..3516cbdf1ee 100644 --- a/arch/mn10300/mm/fault.c +++ b/arch/mn10300/mm/fault.c @@ -24,12 +24,12 @@ #include <linux/init.h> #include <linux/vt_kern.h> /* For unblank_screen() */ -#include <asm/system.h> #include <asm/uaccess.h> #include <asm/pgalloc.h> #include <asm/hardirq.h> -#include <asm/gdb-stub.h> #include <asm/cpu-regs.h> +#include <asm/debugger.h> +#include <asm/gdb-stub.h> /* * Unlock any spinlocks which will prevent us from getting the @@ -123,7 +123,8 @@ asmlinkage void do_page_fault(struct pt_regs *regs, unsigned long fault_code, struct mm_struct *mm; unsigned long page; siginfo_t info; - int write, fault; + int fault; + unsigned int flags = FAULT_FLAG_ALLOW_RETRY | FAULT_FLAG_KILLABLE; #ifdef CONFIG_GDBSTUB /* handle GDB stub causing a fault */ @@ -170,6 +171,9 @@ asmlinkage void do_page_fault(struct pt_regs *regs, unsigned long fault_code, if (in_atomic() || !mm) goto no_context; + if ((fault_code & MMUFCR_xFC_ACCESS) == MMUFCR_xFC_ACCESS_USR) + flags |= FAULT_FLAG_USER; +retry: down_read(&mm->mmap_sem); vma = find_vma(mm, address); @@ -220,7 +224,6 @@ asmlinkage void do_page_fault(struct pt_regs *regs, unsigned long fault_code, */ good_area: info.si_code = SEGV_ACCERR; - write = 0; switch (fault_code & (MMUFCR_xFC_PGINVAL|MMUFCR_xFC_TYPE)) { default: /* 3: write, present */ case MMUFCR_xFC_TYPE_WRITE: @@ -232,7 +235,7 @@ good_area: case MMUFCR_xFC_PGINVAL | MMUFCR_xFC_TYPE_WRITE: if (!(vma->vm_flags & VM_WRITE)) goto bad_area; - write++; + flags |= FAULT_FLAG_WRITE; break; /* read from protected page */ @@ -251,7 +254,11 @@ good_area: * make sure we exit gracefully rather than endlessly redo * the fault. */ - fault = handle_mm_fault(mm, vma, address, write ? FAULT_FLAG_WRITE : 0); + fault = handle_mm_fault(mm, vma, address, flags); + + if ((fault & VM_FAULT_RETRY) && fatal_signal_pending(current)) + return; + if (unlikely(fault & VM_FAULT_ERROR)) { if (fault & VM_FAULT_OOM) goto out_of_memory; @@ -259,10 +266,22 @@ good_area: goto do_sigbus; BUG(); } - if (fault & VM_FAULT_MAJOR) - current->maj_flt++; - else - current->min_flt++; + if (flags & FAULT_FLAG_ALLOW_RETRY) { + if (fault & VM_FAULT_MAJOR) + current->maj_flt++; + else + current->min_flt++; + if (fault & VM_FAULT_RETRY) { + flags &= ~FAULT_FLAG_ALLOW_RETRY; + + /* No need to up_read(&mm->mmap_sem) as we would + * have already released it in __lock_page_or_retry + * in mm/filemap.c. + */ + + goto retry; + } + } up_read(&mm->mmap_sem); return; @@ -306,10 +325,8 @@ no_context: printk(" printing pc:\n"); printk(KERN_ALERT "%08lx\n", regs->pc); -#ifdef CONFIG_GDBSTUB - gdbstub_intercept( - regs, fault_code & 0x00010000 ? EXCEP_IAERROR : EXCEP_DAERROR); -#endif + debugger_intercept(fault_code & 0x00010000 ? EXCEP_IAERROR : EXCEP_DAERROR, + SIGSEGV, SEGV_ACCERR, regs); page = PTBR; page = ((unsigned long *) __va(page))[address >> 22]; @@ -330,9 +347,10 @@ no_context: */ out_of_memory: up_read(&mm->mmap_sem); - printk(KERN_ALERT "VM: killing process %s\n", tsk->comm); - if ((fault_code & MMUFCR_xFC_ACCESS) == MMUFCR_xFC_ACCESS_USR) - do_exit(SIGKILL); + if ((fault_code & MMUFCR_xFC_ACCESS) == MMUFCR_xFC_ACCESS_USR) { + pagefault_out_of_memory(); + return; + } goto no_context; do_sigbus: diff --git a/arch/mn10300/mm/init.c b/arch/mn10300/mm/init.c index 48907cc3bdb..97a1ec0beee 100644 --- a/arch/mn10300/mm/init.c +++ b/arch/mn10300/mm/init.c @@ -29,7 +29,6 @@ #include <linux/gfp.h> #include <asm/processor.h> -#include <asm/system.h> #include <asm/uaccess.h> #include <asm/pgtable.h> #include <asm/pgalloc.h> @@ -37,8 +36,6 @@ #include <asm/tlb.h> #include <asm/sections.h> -DEFINE_PER_CPU(struct mmu_gather, mmu_gathers); - unsigned long highstart_pfn, highend_pfn; #ifdef CONFIG_MN10300_HAS_ATOMIC_OPS_UNIT @@ -102,60 +99,21 @@ void __init paging_init(void) */ void __init mem_init(void) { - int codesize, reservedpages, datasize, initsize; - int tmp; - BUG_ON(!mem_map); #define START_PFN (contig_page_data.bdata->node_min_pfn) #define MAX_LOW_PFN (contig_page_data.bdata->node_low_pfn) - max_mapnr = num_physpages = MAX_LOW_PFN - START_PFN; + max_mapnr = MAX_LOW_PFN - START_PFN; high_memory = (void *) __va(MAX_LOW_PFN * PAGE_SIZE); /* clear the zero-page */ memset(empty_zero_page, 0, PAGE_SIZE); /* this will put all low memory onto the freelists */ - totalram_pages += free_all_bootmem(); - - reservedpages = 0; - for (tmp = 0; tmp < num_physpages; tmp++) - if (PageReserved(&mem_map[tmp])) - reservedpages++; - - codesize = (unsigned long) &_etext - (unsigned long) &_stext; - datasize = (unsigned long) &_edata - (unsigned long) &_etext; - initsize = (unsigned long) &__init_end - (unsigned long) &__init_begin; - - printk(KERN_INFO - "Memory: %luk/%luk available" - " (%dk kernel code, %dk reserved, %dk data, %dk init," - " %ldk highmem)\n", - nr_free_pages() << (PAGE_SHIFT - 10), - max_mapnr << (PAGE_SHIFT - 10), - codesize >> 10, - reservedpages << (PAGE_SHIFT - 10), - datasize >> 10, - initsize >> 10, - totalhigh_pages << (PAGE_SHIFT - 10)); -} + free_all_bootmem(); -/* - * - */ -void free_init_pages(char *what, unsigned long begin, unsigned long end) -{ - unsigned long addr; - - for (addr = begin; addr < end; addr += PAGE_SIZE) { - ClearPageReserved(virt_to_page(addr)); - init_page_count(virt_to_page(addr)); - memset((void *) addr, 0xcc, PAGE_SIZE); - free_page(addr); - totalram_pages++; - } - printk(KERN_INFO "Freeing %s: %ldk freed\n", what, (end - begin) >> 10); + mem_init_print_info(NULL); } /* @@ -163,9 +121,7 @@ void free_init_pages(char *what, unsigned long begin, unsigned long end) */ void free_initmem(void) { - free_init_pages("unused kernel memory", - (unsigned long) &__init_begin, - (unsigned long) &__init_end); + free_initmem_default(POISON_FREE_INITMEM); } /* @@ -174,6 +130,7 @@ void free_initmem(void) #ifdef CONFIG_BLK_DEV_INITRD void free_initrd_mem(unsigned long start, unsigned long end) { - free_init_pages("initrd memory", start, end); + free_reserved_area((void *)start, (void *)end, POISON_FREE_INITMEM, + "initrd"); } #endif diff --git a/arch/mn10300/mm/misalignment.c b/arch/mn10300/mm/misalignment.c index eef989c1d0c..b9920b1edd5 100644 --- a/arch/mn10300/mm/misalignment.c +++ b/arch/mn10300/mm/misalignment.c @@ -23,10 +23,9 @@ #include <linux/interrupt.h> #include <linux/pci.h> #include <asm/processor.h> -#include <asm/system.h> #include <asm/uaccess.h> #include <asm/io.h> -#include <asm/atomic.h> +#include <linux/atomic.h> #include <asm/smp.h> #include <asm/pgalloc.h> #include <asm/cpu-regs.h> diff --git a/arch/mn10300/mm/pgtable.c b/arch/mn10300/mm/pgtable.c index 450f7ba3f8f..e77a7c72808 100644 --- a/arch/mn10300/mm/pgtable.c +++ b/arch/mn10300/mm/pgtable.c @@ -21,7 +21,6 @@ #include <linux/spinlock.h> #include <linux/quicklist.h> -#include <asm/system.h> #include <asm/pgtable.h> #include <asm/pgalloc.h> #include <asm/tlb.h> @@ -79,8 +78,13 @@ struct page *pte_alloc_one(struct mm_struct *mm, unsigned long address) #else pte = alloc_pages(GFP_KERNEL|__GFP_REPEAT, 0); #endif - if (pte) - clear_highpage(pte); + if (!pte) + return NULL; + clear_highpage(pte); + if (!pgtable_page_ctor(pte)) { + __free_page(pte); + return NULL; + } return pte; } @@ -96,7 +100,7 @@ struct page *pte_alloc_one(struct mm_struct *mm, unsigned long address) * checks at dup_mmap(), exec(), and other mmlist addition points * could be used. The locking scheme was chosen on the basis of * manfred's recommendations and having no core impact whatsoever. - * -- wli + * -- nyc */ DEFINE_SPINLOCK(pgd_lock); struct page *pgd_list; diff --git a/arch/mn10300/mm/tlb-smp.c b/arch/mn10300/mm/tlb-smp.c index 0b6a5ad1960..e5d0ef722bf 100644 --- a/arch/mn10300/mm/tlb-smp.c +++ b/arch/mn10300/mm/tlb-smp.c @@ -24,7 +24,6 @@ #include <linux/profile.h> #include <linux/smp.h> #include <asm/tlbflush.h> -#include <asm/system.h> #include <asm/bitops.h> #include <asm/processor.h> #include <asm/bug.h> @@ -64,7 +63,7 @@ void smp_flush_tlb(void *unused) cpu_id = get_cpu(); - if (!cpu_isset(cpu_id, flush_cpumask)) + if (!cpumask_test_cpu(cpu_id, &flush_cpumask)) /* This was a BUG() but until someone can quote me the line * from the intel manual that guarantees an IPI to multiple * CPUs is retried _only_ on the erroring CPUs its staying as a @@ -79,9 +78,9 @@ void smp_flush_tlb(void *unused) else local_flush_tlb_page(flush_mm, flush_va); - smp_mb__before_clear_bit(); - cpu_clear(cpu_id, flush_cpumask); - smp_mb__after_clear_bit(); + smp_mb__before_atomic(); + cpumask_clear_cpu(cpu_id, &flush_cpumask); + smp_mb__after_atomic(); out: put_cpu(); } @@ -103,11 +102,11 @@ static void flush_tlb_others(cpumask_t cpumask, struct mm_struct *mm, * - we do not send IPIs to as-yet unbooted CPUs. */ BUG_ON(!mm); - BUG_ON(cpus_empty(cpumask)); - BUG_ON(cpu_isset(smp_processor_id(), cpumask)); + BUG_ON(cpumask_empty(&cpumask)); + BUG_ON(cpumask_test_cpu(smp_processor_id(), &cpumask)); - cpus_and(tmp, cpumask, cpu_online_map); - BUG_ON(!cpus_equal(cpumask, tmp)); + cpumask_and(&tmp, &cpumask, cpu_online_mask); + BUG_ON(!cpumask_equal(&cpumask, &tmp)); /* I'm not happy about this global shared spinlock in the MM hot path, * but we'll see how contended it is. @@ -128,7 +127,7 @@ static void flush_tlb_others(cpumask_t cpumask, struct mm_struct *mm, /* FIXME: if NR_CPUS>=3, change send_IPI_mask */ smp_call_function(smp_flush_tlb, NULL, 1); - while (!cpus_empty(flush_cpumask)) + while (!cpumask_empty(&flush_cpumask)) /* Lockup detection does not belong here */ smp_mb(); @@ -146,11 +145,11 @@ void flush_tlb_mm(struct mm_struct *mm) cpumask_t cpu_mask; preempt_disable(); - cpu_mask = mm->cpu_vm_mask; - cpu_clear(smp_processor_id(), cpu_mask); + cpumask_copy(&cpu_mask, mm_cpumask(mm)); + cpumask_clear_cpu(smp_processor_id(), &cpu_mask); local_flush_tlb(); - if (!cpus_empty(cpu_mask)) + if (!cpumask_empty(&cpu_mask)) flush_tlb_others(cpu_mask, mm, FLUSH_ALL); preempt_enable(); @@ -165,11 +164,11 @@ void flush_tlb_current_task(void) cpumask_t cpu_mask; preempt_disable(); - cpu_mask = mm->cpu_vm_mask; - cpu_clear(smp_processor_id(), cpu_mask); + cpumask_copy(&cpu_mask, mm_cpumask(mm)); + cpumask_clear_cpu(smp_processor_id(), &cpu_mask); local_flush_tlb(); - if (!cpus_empty(cpu_mask)) + if (!cpumask_empty(&cpu_mask)) flush_tlb_others(cpu_mask, mm, FLUSH_ALL); preempt_enable(); @@ -186,11 +185,11 @@ void flush_tlb_page(struct vm_area_struct *vma, unsigned long va) cpumask_t cpu_mask; preempt_disable(); - cpu_mask = mm->cpu_vm_mask; - cpu_clear(smp_processor_id(), cpu_mask); + cpumask_copy(&cpu_mask, mm_cpumask(mm)); + cpumask_clear_cpu(smp_processor_id(), &cpu_mask); local_flush_tlb_page(mm, va); - if (!cpus_empty(cpu_mask)) + if (!cpumask_empty(&cpu_mask)) flush_tlb_others(cpu_mask, mm, va); preempt_enable(); diff --git a/arch/mn10300/proc-mn103e010/include/proc/cache.h b/arch/mn10300/proc-mn103e010/include/proc/cache.h index c1528004163..967d144f307 100644 --- a/arch/mn10300/proc-mn103e010/include/proc/cache.h +++ b/arch/mn10300/proc-mn103e010/include/proc/cache.h @@ -23,6 +23,7 @@ #define L1_CACHE_TAG_DIRTY 0x00000008 /* data cache tag dirty bit */ #define L1_CACHE_TAG_ENTRY 0x00000ff0 /* cache tag entry address mask */ #define L1_CACHE_TAG_ADDRESS 0xfffff000 /* cache tag line address mask */ +#define L1_CACHE_TAG_MASK +(L1_CACHE_TAG_ADDRESS|L1_CACHE_TAG_ENTRY) /* * specification of the interval between interrupt checking intervals whilst diff --git a/arch/mn10300/proc-mn2ws0050/include/proc/cache.h b/arch/mn10300/proc-mn2ws0050/include/proc/cache.h index cafd7b5b55b..bcb5df2d892 100644 --- a/arch/mn10300/proc-mn2ws0050/include/proc/cache.h +++ b/arch/mn10300/proc-mn2ws0050/include/proc/cache.h @@ -29,6 +29,7 @@ #define L1_CACHE_TAG_DIRTY 0x00000008 /* data cache tag dirty bit */ #define L1_CACHE_TAG_ENTRY 0x00000fe0 /* cache tag entry address mask */ #define L1_CACHE_TAG_ADDRESS 0xfffff000 /* cache tag line address mask */ +#define L1_CACHE_TAG_MASK +(L1_CACHE_TAG_ADDRESS|L1_CACHE_TAG_ENTRY) /* * specification of the interval between interrupt checking intervals whilst diff --git a/arch/mn10300/proc-mn2ws0050/proc-init.c b/arch/mn10300/proc-mn2ws0050/proc-init.c index c58249b9525..ee6d03dbc8d 100644 --- a/arch/mn10300/proc-mn2ws0050/proc-init.c +++ b/arch/mn10300/proc-mn2ws0050/proc-init.c @@ -15,10 +15,9 @@ #include <linux/interrupt.h> #include <asm/processor.h> -#include <asm/system.h> #include <asm/uaccess.h> #include <asm/io.h> -#include <asm/atomic.h> +#include <linux/atomic.h> #include <asm/smp.h> #include <asm/pgalloc.h> #include <asm/busctl-regs.h> diff --git a/arch/mn10300/unit-asb2303/include/unit/timex.h b/arch/mn10300/unit-asb2303/include/unit/timex.h index cc18fe7d8b9..c37f9832cf1 100644 --- a/arch/mn10300/unit-asb2303/include/unit/timex.h +++ b/arch/mn10300/unit-asb2303/include/unit/timex.h @@ -11,10 +11,6 @@ #ifndef _ASM_UNIT_TIMEX_H #define _ASM_UNIT_TIMEX_H -#ifndef __ASSEMBLY__ -#include <linux/irq.h> -#endif /* __ASSEMBLY__ */ - #include <asm/timer-regs.h> #include <unit/clock.h> #include <asm/param.h> diff --git a/arch/mn10300/unit-asb2303/smc91111.c b/arch/mn10300/unit-asb2303/smc91111.c index 43c24643941..53677694b16 100644 --- a/arch/mn10300/unit-asb2303/smc91111.c +++ b/arch/mn10300/unit-asb2303/smc91111.c @@ -15,6 +15,7 @@ #include <linux/platform_device.h> #include <asm/io.h> +#include <asm/irq.h> #include <asm/timex.h> #include <asm/processor.h> #include <asm/intctl-regs.h> diff --git a/arch/mn10300/unit-asb2305/Makefile b/arch/mn10300/unit-asb2305/Makefile index 0551022225b..cbc5abaa939 100644 --- a/arch/mn10300/unit-asb2305/Makefile +++ b/arch/mn10300/unit-asb2305/Makefile @@ -5,4 +5,4 @@ ############################################################################### obj-y := unit-init.o leds.o -obj-$(CONFIG_PCI) += pci.o pci-asb2305.o pci-irq.o pci-iomap.o +obj-$(CONFIG_PCI) += pci.o pci-asb2305.o pci-irq.o diff --git a/arch/mn10300/unit-asb2305/include/unit/timex.h b/arch/mn10300/unit-asb2305/include/unit/timex.h index 758af30d1a1..4cefc224f44 100644 --- a/arch/mn10300/unit-asb2305/include/unit/timex.h +++ b/arch/mn10300/unit-asb2305/include/unit/timex.h @@ -11,10 +11,6 @@ #ifndef _ASM_UNIT_TIMEX_H #define _ASM_UNIT_TIMEX_H -#ifndef __ASSEMBLY__ -#include <linux/irq.h> -#endif /* __ASSEMBLY__ */ - #include <asm/timer-regs.h> #include <unit/clock.h> #include <asm/param.h> diff --git a/arch/mn10300/unit-asb2305/pci-asb2305.c b/arch/mn10300/unit-asb2305/pci-asb2305.c index 8e6763e6f25..febb9cd8317 100644 --- a/arch/mn10300/unit-asb2305/pci-asb2305.c +++ b/arch/mn10300/unit-asb2305/pci-asb2305.c @@ -213,28 +213,6 @@ void __init pcibios_resource_survey(void) pcibios_allocate_resources(1); } -/* - * If we set up a device for bus mastering, we need to check the latency - * timer as certain crappy BIOSes forget to set it properly. - */ -unsigned int pcibios_max_latency = 255; - -void pcibios_set_master(struct pci_dev *dev) -{ - u8 lat; - - pci_read_config_byte(dev, PCI_LATENCY_TIMER, &lat); - - if (lat < 16) - lat = (64 <= pcibios_max_latency) ? 64 : pcibios_max_latency; - else if (lat > pcibios_max_latency) - lat = pcibios_max_latency; - else - return; - - pci_write_config_byte(dev, PCI_LATENCY_TIMER, lat); -} - int pci_mmap_page_range(struct pci_dev *dev, struct vm_area_struct *vma, enum pci_mmap_state mmap_state, int write_combine) { @@ -243,7 +221,7 @@ int pci_mmap_page_range(struct pci_dev *dev, struct vm_area_struct *vma, /* Leave vm_pgoff as-is, the PCI space address is the physical * address on this platform. */ - vma->vm_flags |= VM_LOCKED | VM_IO; + vma->vm_flags |= VM_LOCKED; prot = pgprot_val(vma->vm_page_prot); prot &= ~_PAGE_CACHE; diff --git a/arch/mn10300/unit-asb2305/pci-asb2305.h b/arch/mn10300/unit-asb2305/pci-asb2305.h index c3fa294b6e2..9e17aca5a2a 100644 --- a/arch/mn10300/unit-asb2305/pci-asb2305.h +++ b/arch/mn10300/unit-asb2305/pci-asb2305.h @@ -31,14 +31,10 @@ extern unsigned int pci_probe; /* pci-asb2305.c */ -extern unsigned int pcibios_max_latency; - extern void pcibios_resource_survey(void); /* pci.c */ -extern int pcibios_last_bus; -extern struct pci_bus *pci_root_bus; extern struct pci_ops *pci_root_ops; extern struct irq_routing_table *pcibios_get_irq_routing_table(void); diff --git a/arch/mn10300/unit-asb2305/pci-iomap.c b/arch/mn10300/unit-asb2305/pci-iomap.c index c1a8d8f941f..bd65dae17f3 100644 --- a/arch/mn10300/unit-asb2305/pci-iomap.c +++ b/arch/mn10300/unit-asb2305/pci-iomap.c @@ -23,8 +23,12 @@ void __iomem *pci_iomap(struct pci_dev *dev, int bar, unsigned long maxlen) if (!len || !start) return NULL; - if ((flags & IORESOURCE_IO) || (flags & IORESOURCE_MEM)) - return (void __iomem *) start; + if ((flags & IORESOURCE_IO) || (flags & IORESOURCE_MEM)) { + if (flags & IORESOURCE_CACHEABLE && !(flags & IORESOURCE_IO)) + return ioremap(start, len); + else + return ioremap_nocache(start, len); + } return NULL; } diff --git a/arch/mn10300/unit-asb2305/pci-irq.c b/arch/mn10300/unit-asb2305/pci-irq.c index 91212ea71e6..fcb28ceb824 100644 --- a/arch/mn10300/unit-asb2305/pci-irq.c +++ b/arch/mn10300/unit-asb2305/pci-irq.c @@ -29,7 +29,7 @@ void __init pcibios_fixup_irqs(void) struct pci_dev *dev = NULL; u8 line, pin; - while ((dev = pci_get_device(PCI_ANY_ID, PCI_ANY_ID, dev)) != NULL) { + for_each_pci_dev(dev) { pci_read_config_byte(dev, PCI_INTERRUPT_PIN, &pin); if (pin) { dev->irq = XIRQ1; @@ -40,10 +40,6 @@ void __init pcibios_fixup_irqs(void) } } -void __init pcibios_penalize_isa_irq(int irq) -{ -} - void pcibios_enable_irq(struct pci_dev *dev) { pci_write_config_byte(dev, PCI_INTERRUPT_LINE, dev->irq); diff --git a/arch/mn10300/unit-asb2305/pci.c b/arch/mn10300/unit-asb2305/pci.c index a4954fe8209..6b4339f8c9c 100644 --- a/arch/mn10300/unit-asb2305/pci.c +++ b/arch/mn10300/unit-asb2305/pci.c @@ -17,13 +17,13 @@ #include <linux/init.h> #include <linux/ioport.h> #include <linux/delay.h> +#include <linux/irq.h> #include <asm/io.h> +#include <asm/irq.h> #include "pci-asb2305.h" unsigned int pci_probe = 1; -int pcibios_last_bus = -1; -struct pci_bus *pci_root_bus; struct pci_ops *pci_root_ops; /* @@ -32,8 +32,7 @@ struct pci_ops *pci_root_ops; * insert specific PCI bus resources instead of using the platform-level bus * resources directly for the PCI root bus. * - * These are configured and inserted by pcibios_init() and are attached to the - * root bus by pcibios_fixup_bus(). + * These are configured and inserted by pcibios_init(). */ static struct resource pci_ioport_resource = { .name = "PCI IO", @@ -78,52 +77,6 @@ static inline int __query(const struct pci_bus *bus, unsigned int devfn) } /* - * translate Linuxcentric addresses to PCI bus addresses - */ -void pcibios_resource_to_bus(struct pci_dev *dev, struct pci_bus_region *region, - struct resource *res) -{ - if (res->flags & IORESOURCE_IO) { - region->start = (res->start & 0x00ffffff); - region->end = (res->end & 0x00ffffff); - } - - if (res->flags & IORESOURCE_MEM) { - region->start = (res->start & 0x03ffffff) | MEM_PAGING_REG; - region->end = (res->end & 0x03ffffff) | MEM_PAGING_REG; - } - -#if 0 - printk(KERN_DEBUG "RES->BUS: %lx-%lx => %lx-%lx\n", - res->start, res->end, region->start, region->end); -#endif -} -EXPORT_SYMBOL(pcibios_resource_to_bus); - -/* - * translate PCI bus addresses to Linuxcentric addresses - */ -void pcibios_bus_to_resource(struct pci_dev *dev, struct resource *res, - struct pci_bus_region *region) -{ - if (res->flags & IORESOURCE_IO) { - res->start = (region->start & 0x00ffffff) | 0xbe000000; - res->end = (region->end & 0x00ffffff) | 0xbe000000; - } - - if (res->flags & IORESOURCE_MEM) { - res->start = (region->start & 0x03ffffff) | 0xb8000000; - res->end = (region->end & 0x03ffffff) | 0xb8000000; - } - -#if 0 - printk(KERN_INFO "BUS->RES: %lx-%lx => %lx-%lx\n", - region->start, region->end, res->start, res->end); -#endif -} -EXPORT_SYMBOL(pcibios_bus_to_resource); - -/* * */ static int pci_ampci_read_config_byte(struct pci_bus *bus, unsigned int devfn, @@ -328,7 +281,7 @@ static int __init pci_check_direct(void) return -ENODEV; } -static int __devinit is_valid_resource(struct pci_dev *dev, int idx) +static int is_valid_resource(struct pci_dev *dev, int idx) { unsigned int i, type_mask = IORESOURCE_IO | IORESOURCE_MEM; struct resource *devr = &dev->resource[idx], *busr; @@ -348,11 +301,9 @@ static int __devinit is_valid_resource(struct pci_dev *dev, int idx) return 0; } -static void __devinit pcibios_fixup_device_resources(struct pci_dev *dev) +static void pcibios_fixup_device_resources(struct pci_dev *dev) { - struct pci_bus_region region; - int i; - int limit; + int limit, i; if (dev->bus->number != 0) return; @@ -364,9 +315,6 @@ static void __devinit pcibios_fixup_device_resources(struct pci_dev *dev) if (!dev->resource[i].flags) continue; - region.start = dev->resource[i].start; - region.end = dev->resource[i].end; - pcibios_bus_to_resource(dev, &dev->resource[i], ®ion); if (is_valid_resource(dev, i)) pci_claim_resource(dev, i); } @@ -376,15 +324,10 @@ static void __devinit pcibios_fixup_device_resources(struct pci_dev *dev) * Called after each bus is probed, but before its children * are examined. */ -void __devinit pcibios_fixup_bus(struct pci_bus *bus) +void pcibios_fixup_bus(struct pci_bus *bus) { struct pci_dev *dev; - if (bus->number == 0) { - bus->resource[0] = &pci_ioport_resource; - bus->resource[1] = &pci_iomem_resource; - } - if (bus->self) { pci_read_bridge_bases(bus); pcibios_fixup_device_resources(bus->self); @@ -402,6 +345,9 @@ void __devinit pcibios_fixup_bus(struct pci_bus *bus) */ static int __init pcibios_init(void) { + resource_size_t io_offset, mem_offset; + LIST_HEAD(resources); + ioport_resource.start = 0xA0000000; ioport_resource.end = 0xDFFFFFFF; iomem_resource.start = 0xA0000000; @@ -423,7 +369,14 @@ static int __init pcibios_init(void) printk(KERN_INFO "PCI: Probing PCI hardware [mempage %08x]\n", MEM_PAGING_REG); - pci_root_bus = pci_scan_bus(0, &pci_direct_ampci, NULL); + io_offset = pci_ioport_resource.start - + (pci_ioport_resource.start & 0x00ffffff); + mem_offset = pci_iomem_resource.start - + ((pci_iomem_resource.start & 0x03ffffff) | MEM_PAGING_REG); + + pci_add_resource_offset(&resources, &pci_ioport_resource, io_offset); + pci_add_resource_offset(&resources, &pci_iomem_resource, mem_offset); + pci_scan_root_bus(NULL, 0, &pci_direct_ampci, NULL, &resources); pcibios_irq_init(); pcibios_fixup_irqs(); @@ -438,10 +391,6 @@ char *__init pcibios_setup(char *str) if (!strcmp(str, "off")) { pci_probe = 0; return NULL; - - } else if (!strncmp(str, "lastbus=", 8)) { - pcibios_last_bus = simple_strtol(str+8, NULL, 0); - return NULL; } return str; diff --git a/arch/mn10300/unit-asb2305/unit-init.c b/arch/mn10300/unit-asb2305/unit-init.c index e1becd6b757..bc4adfaf815 100644 --- a/arch/mn10300/unit-asb2305/unit-init.c +++ b/arch/mn10300/unit-asb2305/unit-init.c @@ -13,6 +13,7 @@ #include <linux/init.h> #include <linux/pci.h> #include <asm/io.h> +#include <asm/irq.h> #include <asm/setup.h> #include <asm/processor.h> #include <asm/intctl-regs.h> diff --git a/arch/mn10300/unit-asb2364/include/unit/fpga-regs.h b/arch/mn10300/unit-asb2364/include/unit/fpga-regs.h index 7cf12054db6..33f100f9b46 100644 --- a/arch/mn10300/unit-asb2364/include/unit/fpga-regs.h +++ b/arch/mn10300/unit-asb2364/include/unit/fpga-regs.h @@ -14,7 +14,7 @@ #define ASB2364_FPGA_REG_RESET_USB __SYSREG(0xa900130c, u16) #define ASB2364_FPGA_REG_RESET_AV __SYSREG(0xa9001310, u16) -#define ASB2364_FPGA_REG_IRQ(X) __SYSREG(0xa9001590+((X)*4), u16) +#define ASB2364_FPGA_REG_IRQ(X) __SYSREG(0xa9001510+((X)*4), u16) #define ASB2364_FPGA_REG_IRQ_LAN ASB2364_FPGA_REG_IRQ(0) #define ASB2364_FPGA_REG_IRQ_UART ASB2364_FPGA_REG_IRQ(1) #define ASB2364_FPGA_REG_IRQ_I2C ASB2364_FPGA_REG_IRQ(2) diff --git a/arch/mn10300/unit-asb2364/include/unit/serial.h b/arch/mn10300/unit-asb2364/include/unit/serial.h index 7f048bbfdfd..92f224a97ef 100644 --- a/arch/mn10300/unit-asb2364/include/unit/serial.h +++ b/arch/mn10300/unit-asb2364/include/unit/serial.h @@ -59,18 +59,18 @@ static inline void __debug_to_serial(const char *p, int n) #define SERIAL_PORT_DFNS /* stolen by gdb-stub */ #if defined(CONFIG_GDBSTUB_ON_TTYS0) -#define GDBPORT_SERIAL_RX __SYSREG(SERIAL_PORT0_BASE_ADDRESS + UART_RX * 4, u8) -#define GDBPORT_SERIAL_TX __SYSREG(SERIAL_PORT0_BASE_ADDRESS + UART_TX * 4, u8) -#define GDBPORT_SERIAL_DLL __SYSREG(SERIAL_PORT0_BASE_ADDRESS + UART_DLL * 4, u8) -#define GDBPORT_SERIAL_DLM __SYSREG(SERIAL_PORT0_BASE_ADDRESS + UART_DLM * 4, u8) -#define GDBPORT_SERIAL_IER __SYSREG(SERIAL_PORT0_BASE_ADDRESS + UART_IER * 4, u8) -#define GDBPORT_SERIAL_IIR __SYSREG(SERIAL_PORT0_BASE_ADDRESS + UART_IIR * 4, u8) -#define GDBPORT_SERIAL_FCR __SYSREG(SERIAL_PORT0_BASE_ADDRESS + UART_FCR * 4, u8) -#define GDBPORT_SERIAL_LCR __SYSREG(SERIAL_PORT0_BASE_ADDRESS + UART_LCR * 4, u8) -#define GDBPORT_SERIAL_MCR __SYSREG(SERIAL_PORT0_BASE_ADDRESS + UART_MCR * 4, u8) -#define GDBPORT_SERIAL_LSR __SYSREG(SERIAL_PORT0_BASE_ADDRESS + UART_LSR * 4, u8) -#define GDBPORT_SERIAL_MSR __SYSREG(SERIAL_PORT0_BASE_ADDRESS + UART_MSR * 4, u8) -#define GDBPORT_SERIAL_SCR __SYSREG(SERIAL_PORT0_BASE_ADDRESS + UART_SCR * 4, u8) +#define GDBPORT_SERIAL_RX __SYSREG(SERIAL_PORT0_BASE_ADDRESS + UART_RX * 2, u8) +#define GDBPORT_SERIAL_TX __SYSREG(SERIAL_PORT0_BASE_ADDRESS + UART_TX * 2, u8) +#define GDBPORT_SERIAL_DLL __SYSREG(SERIAL_PORT0_BASE_ADDRESS + UART_DLL * 2, u8) +#define GDBPORT_SERIAL_DLM __SYSREG(SERIAL_PORT0_BASE_ADDRESS + UART_DLM * 2, u8) +#define GDBPORT_SERIAL_IER __SYSREG(SERIAL_PORT0_BASE_ADDRESS + UART_IER * 2, u8) +#define GDBPORT_SERIAL_IIR __SYSREG(SERIAL_PORT0_BASE_ADDRESS + UART_IIR * 2, u8) +#define GDBPORT_SERIAL_FCR __SYSREG(SERIAL_PORT0_BASE_ADDRESS + UART_FCR * 2, u8) +#define GDBPORT_SERIAL_LCR __SYSREG(SERIAL_PORT0_BASE_ADDRESS + UART_LCR * 2, u8) +#define GDBPORT_SERIAL_MCR __SYSREG(SERIAL_PORT0_BASE_ADDRESS + UART_MCR * 2, u8) +#define GDBPORT_SERIAL_LSR __SYSREG(SERIAL_PORT0_BASE_ADDRESS + UART_LSR * 2, u8) +#define GDBPORT_SERIAL_MSR __SYSREG(SERIAL_PORT0_BASE_ADDRESS + UART_MSR * 2, u8) +#define GDBPORT_SERIAL_SCR __SYSREG(SERIAL_PORT0_BASE_ADDRESS + UART_SCR * 2, u8) #define GDBPORT_SERIAL_IRQ SERIAL_IRQ #elif defined(CONFIG_GDBSTUB_ON_TTYS1) diff --git a/arch/mn10300/unit-asb2364/include/unit/timex.h b/arch/mn10300/unit-asb2364/include/unit/timex.h index ddb7ed01070..42f32db7508 100644 --- a/arch/mn10300/unit-asb2364/include/unit/timex.h +++ b/arch/mn10300/unit-asb2364/include/unit/timex.h @@ -11,10 +11,6 @@ #ifndef _ASM_UNIT_TIMEX_H #define _ASM_UNIT_TIMEX_H -#ifndef __ASSEMBLY__ -#include <linux/irq.h> -#endif /* __ASSEMBLY__ */ - #include <asm/timer-regs.h> #include <unit/clock.h> #include <asm/param.h> diff --git a/arch/mn10300/unit-asb2364/irq-fpga.c b/arch/mn10300/unit-asb2364/irq-fpga.c index fcf29754e4d..073e2ccc4a4 100644 --- a/arch/mn10300/unit-asb2364/irq-fpga.c +++ b/arch/mn10300/unit-asb2364/irq-fpga.c @@ -17,38 +17,38 @@ /* * FPGA PIC operations */ -static void asb2364_fpga_mask(unsigned int irq) +static void asb2364_fpga_mask(struct irq_data *d) { - ASB2364_FPGA_REG_MASK(irq - NR_CPU_IRQS) = 0x0001; + ASB2364_FPGA_REG_MASK(d->irq - NR_CPU_IRQS) = 0x0001; SyncExBus(); } -static void asb2364_fpga_ack(unsigned int irq) +static void asb2364_fpga_ack(struct irq_data *d) { - ASB2364_FPGA_REG_IRQ(irq - NR_CPU_IRQS) = 0x0001; + ASB2364_FPGA_REG_IRQ(d->irq - NR_CPU_IRQS) = 0x0001; SyncExBus(); } -static void asb2364_fpga_mask_ack(unsigned int irq) +static void asb2364_fpga_mask_ack(struct irq_data *d) { - ASB2364_FPGA_REG_MASK(irq - NR_CPU_IRQS) = 0x0001; + ASB2364_FPGA_REG_MASK(d->irq - NR_CPU_IRQS) = 0x0001; SyncExBus(); - ASB2364_FPGA_REG_IRQ(irq - NR_CPU_IRQS) = 0x0001; + ASB2364_FPGA_REG_IRQ(d->irq - NR_CPU_IRQS) = 0x0001; SyncExBus(); } -static void asb2364_fpga_unmask(unsigned int irq) +static void asb2364_fpga_unmask(struct irq_data *d) { - ASB2364_FPGA_REG_MASK(irq - NR_CPU_IRQS) = 0x0000; + ASB2364_FPGA_REG_MASK(d->irq - NR_CPU_IRQS) = 0x0000; SyncExBus(); } static struct irq_chip asb2364_fpga_pic = { .name = "fpga", - .ack = asb2364_fpga_ack, - .mask = asb2364_fpga_mask, - .mask_ack = asb2364_fpga_mask_ack, - .unmask = asb2364_fpga_unmask, + .irq_ack = asb2364_fpga_ack, + .irq_mask = asb2364_fpga_mask, + .irq_mask_ack = asb2364_fpga_mask_ack, + .irq_unmask = asb2364_fpga_unmask, }; /* @@ -76,7 +76,7 @@ static irqreturn_t fpga_interrupt(int irq, void *_mask) static struct irqaction fpga_irq[] = { [0] = { .handler = fpga_interrupt, - .flags = IRQF_DISABLED | IRQF_SHARED, + .flags = IRQF_SHARED, .name = "fpga", }, }; @@ -88,8 +88,20 @@ void __init irq_fpga_init(void) { int irq; + ASB2364_FPGA_REG_MASK_LAN = 0x0001; + SyncExBus(); + ASB2364_FPGA_REG_MASK_UART = 0x0001; + SyncExBus(); + ASB2364_FPGA_REG_MASK_I2C = 0x0001; + SyncExBus(); + ASB2364_FPGA_REG_MASK_USB = 0x0001; + SyncExBus(); + ASB2364_FPGA_REG_MASK_FPGA = 0x0001; + SyncExBus(); + for (irq = NR_CPU_IRQS; irq < NR_IRQS; irq++) - set_irq_chip_and_handler(irq, &asb2364_fpga_pic, handle_level_irq); + irq_set_chip_and_handler(irq, &asb2364_fpga_pic, + handle_level_irq); /* the FPGA drives the XIRQ1 input on the CPU PIC */ setup_irq(XIRQ1, &fpga_irq[0]); diff --git a/arch/mn10300/unit-asb2364/unit-init.c b/arch/mn10300/unit-asb2364/unit-init.c index 11440803db1..6359b41ce7e 100644 --- a/arch/mn10300/unit-asb2364/unit-init.c +++ b/arch/mn10300/unit-asb2364/unit-init.c @@ -20,13 +20,41 @@ #include <asm/processor.h> #include <asm/irq.h> #include <asm/intctl-regs.h> +#include <asm/serial-regs.h> #include <unit/fpga-regs.h> +#include <unit/serial.h> +#include <unit/smsc911x.h> + +#define TTYS0_SERIAL_IER __SYSREG(SERIAL_PORT0_BASE_ADDRESS + UART_IER * 2, u8) +#define LAN_IRQ_CFG __SYSREG(SMSC911X_BASE + 0x54, u32) +#define LAN_INT_EN __SYSREG(SMSC911X_BASE + 0x5c, u32) /* * initialise some of the unit hardware before gdbstub is set up */ asmlinkage void __init unit_init(void) { + /* Make sure we aren't going to get unexpected interrupts */ + TTYS0_SERIAL_IER = 0; + SC0RXICR = 0; + SC0TXICR = 0; + SC1RXICR = 0; + SC1TXICR = 0; + SC2RXICR = 0; + SC2TXICR = 0; + + /* Attempt to reset the FPGA attached peripherals */ + ASB2364_FPGA_REG_RESET_LAN = 0x0000; + SyncExBus(); + ASB2364_FPGA_REG_RESET_UART = 0x0000; + SyncExBus(); + ASB2364_FPGA_REG_RESET_I2C = 0x0000; + SyncExBus(); + ASB2364_FPGA_REG_RESET_USB = 0x0000; + SyncExBus(); + ASB2364_FPGA_REG_RESET_AV = 0x0000; + SyncExBus(); + /* set up the external interrupts */ /* XIRQ[0]: NAND RXBY */ @@ -56,7 +84,23 @@ asmlinkage void __init unit_init(void) */ asmlinkage void __init unit_setup(void) { + /* Release the reset on the SMSC911X so that it is ready by the time we + * need it */ + ASB2364_FPGA_REG_RESET_LAN = 0x0001; + SyncExBus(); + ASB2364_FPGA_REG_RESET_UART = 0x0001; + SyncExBus(); + ASB2364_FPGA_REG_RESET_I2C = 0x0001; + SyncExBus(); + ASB2364_FPGA_REG_RESET_USB = 0x0001; + SyncExBus(); + ASB2364_FPGA_REG_RESET_AV = 0x0001; + SyncExBus(); + /* Make sure the ethernet chipset isn't going to give us an interrupt + * storm from stuff it was doing pre-reset */ + LAN_IRQ_CFG = 0; + LAN_INT_EN = 0; } /* |