diff options
Diffstat (limited to 'arch/unicore32')
71 files changed, 664 insertions, 1788 deletions
diff --git a/arch/unicore32/Kconfig b/arch/unicore32/Kconfig index d3a303246c9..928237a7b9c 100644 --- a/arch/unicore32/Kconfig +++ b/arch/unicore32/Kconfig @@ -1,39 +1,33 @@ config UNICORE32 def_bool y + select ARCH_MIGHT_HAVE_PC_PARPORT + select ARCH_MIGHT_HAVE_PC_SERIO select HAVE_MEMBLOCK select HAVE_GENERIC_DMA_COHERENT - select HAVE_GENERIC_HARDIRQS select HAVE_DMA_ATTRS select HAVE_KERNEL_GZIP select HAVE_KERNEL_BZIP2 + select GENERIC_ATOMIC64 select HAVE_KERNEL_LZO select HAVE_KERNEL_LZMA + select VIRT_TO_BUS + select ARCH_HAVE_CUSTOM_GPIO_H select GENERIC_FIND_FIRST_BIT select GENERIC_IRQ_PROBE select GENERIC_IRQ_SHOW select ARCH_WANT_FRAME_POINTERS + select GENERIC_IOMAP + select MODULES_USE_ELF_REL help UniCore-32 is 32-bit Instruction Set Architecture, including a series of low-power-consumption RISC chip designs licensed by PKUnity Ltd. Please see web page at <http://www.pkunity.com/>. -config HAVE_PWM - bool - -config GENERIC_GPIO - def_bool y - -config GENERIC_CLOCKEVENTS - bool - config GENERIC_CSUM def_bool y -config GENERIC_IOMAP - def_bool y - -config NO_IOPORT +config NO_IOPORT_MAP bool config STACKTRACE_SUPPORT @@ -57,9 +51,6 @@ config ARCH_HAS_ILOG2_U32 config ARCH_HAS_ILOG2_U64 bool -config ARCH_HAS_CPUFREQ - bool - config GENERIC_HWEIGHT def_bool y @@ -69,6 +60,9 @@ config GENERIC_CALIBRATE_DELAY config ARCH_MAY_HAVE_PC_FDC bool +config ZONE_DMA + def_bool y + config NEED_DMA_MAP_STATE def_bool y @@ -90,7 +84,6 @@ config ARCH_PUV3 select GENERIC_CLOCKEVENTS select HAVE_CLK select ARCH_REQUIRE_GPIOLIB - select ARCH_HAS_CPUFREQ # CONFIGs for ARCH_PUV3 @@ -109,7 +102,8 @@ config PUV3_DB0913 config PUV3_NB0916 bool "NetBook board (0916)" - select HAVE_PWM + select PWM + select PWM_PUV3 config PUV3_SMW0919 bool "Security Mini-Workstation board (0919)" @@ -148,8 +142,6 @@ endmenu menu "Kernel Features" -source "kernel/time/Kconfig" - source "kernel/Kconfig.preempt" source "kernel/Kconfig.hz" @@ -158,7 +150,7 @@ source "mm/Kconfig" config LEDS def_bool y - depends on GENERIC_GPIO + depends on GPIOLIB config ALIGNMENT_TRAP def_bool y @@ -202,9 +194,7 @@ menu "Power management options" source "kernel/power/Kconfig" -if ARCH_HAS_CPUFREQ source "drivers/cpufreq/Kconfig" -endif config ARCH_SUSPEND_POSSIBLE def_bool y if !ARCH_FPGA @@ -221,34 +211,22 @@ if ARCH_PUV3 config PUV3_GPIO bool depends on !ARCH_FPGA - select GENERIC_GPIO - select GPIO_SYSFS if EXPERIMENTAL + select GPIO_SYSFS default y -config PUV3_PWM - tristate - default BACKLIGHT_PWM - help - Enable support for NB0916 PWM controllers - -config PUV3_RTC - tristate "PKUnity v3 RTC Support" - depends on !ARCH_FPGA - if PUV3_NB0916 menu "PKUnity NetBook-0916 Features" config I2C_BATTERY_BQ27200 tristate "I2C Battery BQ27200 Support" - select PUV3_I2C + select I2C_PUV3 select POWER_SUPPLY select BATTERY_BQ27x00 config I2C_EEPROM_AT24 tristate "I2C EEPROMs AT24 support" - select PUV3_I2C - select MISC_DEVICES + select I2C_PUV3 select EEPROM_AT24 config LCD_BACKLIGHT diff --git a/arch/unicore32/Kconfig.debug b/arch/unicore32/Kconfig.debug index 3140151ede4..1a362623984 100644 --- a/arch/unicore32/Kconfig.debug +++ b/arch/unicore32/Kconfig.debug @@ -27,13 +27,6 @@ config EARLY_PRINTK with klogd/syslogd or the X server. You should normally N here, unless you want to debug such a crash. -config DEBUG_STACK_USAGE - bool "Enable stack utilization instrumentation" - depends on DEBUG_KERNEL - help - Enables the display of the minimum amount of free stack which each - task has ever had available in the sysrq-T output. - # These options are only for real kernel hackers who want to get their hands dirty. config DEBUG_LL bool "Kernel low-level debugging functions" @@ -51,18 +44,4 @@ config DEBUG_OCD Say Y here if you want the debug print routines to direct their output to the UniCore On-Chip-Debugger channel using CP #1. -config DEBUG_OCD_BREAKPOINT - bool "Breakpoint support via On-Chip-Debugger" - depends on DEBUG_OCD - -config DEBUG_UART - int "Kernel low-level debugging messages via serial port" - depends on DEBUG_LL - range 0 1 - default "0" - help - Choice for UART for kernel low-level using PKUnity UARTS, - should be between zero and one. The port must have been - initialised by the boot-loader before use. - endmenu diff --git a/arch/unicore32/Makefile b/arch/unicore32/Makefile index 76a8beec7d0..b6f5c4c1eaf 100644 --- a/arch/unicore32/Makefile +++ b/arch/unicore32/Makefile @@ -33,49 +33,16 @@ endif CHECKFLAGS += -D__unicore32__ head-y := arch/unicore32/kernel/head.o -head-y += arch/unicore32/kernel/init_task.o core-y += arch/unicore32/kernel/ core-y += arch/unicore32/mm/ libs-y += arch/unicore32/lib/ -ASM_GENERATED_DIR := $(srctree)/arch/unicore32/include/generated -LINUXINCLUDE += -I$(ASM_GENERATED_DIR) - -ASM_GENERIC_HEADERS := atomic.h auxvec.h -ASM_GENERIC_HEADERS += bitsperlong.h bug.h bugs.h -ASM_GENERIC_HEADERS += cputime.h current.h -ASM_GENERIC_HEADERS += device.h div64.h -ASM_GENERIC_HEADERS += emergency-restart.h errno.h -ASM_GENERIC_HEADERS += fb.h fcntl.h ftrace.h futex.h -ASM_GENERIC_HEADERS += hardirq.h hw_irq.h -ASM_GENERIC_HEADERS += ioctl.h ioctls.h ipcbuf.h irq_regs.h -ASM_GENERIC_HEADERS += kdebug.h kmap_types.h -ASM_GENERIC_HEADERS += local.h -ASM_GENERIC_HEADERS += mman.h module.h msgbuf.h -ASM_GENERIC_HEADERS += param.h parport.h percpu.h poll.h posix_types.h -ASM_GENERIC_HEADERS += resource.h -ASM_GENERIC_HEADERS += scatterlist.h sections.h segment.h sembuf.h serial.h -ASM_GENERIC_HEADERS += setup.h shmbuf.h shmparam.h -ASM_GENERIC_HEADERS += siginfo.h signal.h sizes.h -ASM_GENERIC_HEADERS += socket.h sockios.h stat.h statfs.h swab.h syscalls.h -ASM_GENERIC_HEADERS += termbits.h termios.h topology.h types.h -ASM_GENERIC_HEADERS += ucontext.h unaligned.h user.h -ASM_GENERIC_HEADERS += vga.h -ASM_GENERIC_HEADERS += xor.h - -archprepare: -ifneq ($(ASM_GENERATED_DIR), $(wildcard $(ASM_GENERATED_DIR))) - $(Q)mkdir -p $(ASM_GENERATED_DIR)/asm - $(Q)$(foreach a, $(ASM_GENERIC_HEADERS), \ - echo '#include <asm-generic/$a>' \ - > $(ASM_GENERATED_DIR)/asm/$a; ) -endif - boot := arch/unicore32/boot -# Default target when executing plain make +# Default defconfig and target when executing plain make +KBUILD_DEFCONFIG := $(ARCH)_defconfig KBUILD_IMAGE := zImage all: $(KBUILD_IMAGE) @@ -83,8 +50,6 @@ all: $(KBUILD_IMAGE) zImage Image uImage: vmlinux $(Q)$(MAKE) $(build)=$(boot) $(boot)/$@ -MRPROPER_DIRS += $(ASM_GENERATED_DIR) - archclean: $(Q)$(MAKE) $(clean)=$(boot) diff --git a/arch/unicore32/boot/Makefile b/arch/unicore32/boot/Makefile index 79e5f88845d..ec7fb70b412 100644 --- a/arch/unicore32/boot/Makefile +++ b/arch/unicore32/boot/Makefile @@ -11,8 +11,6 @@ # Copyright (C) 2001~2010 GUAN Xue-tao # -MKIMAGE := $(srctree)/scripts/mkuboot.sh - targets := Image zImage uImage $(obj)/Image: vmlinux FORCE @@ -26,14 +24,8 @@ $(obj)/zImage: $(obj)/compressed/vmlinux FORCE $(call if_changed,objcopy) @echo ' Kernel: $@ is ready' -quiet_cmd_uimage = UIMAGE $@ - cmd_uimage = $(CONFIG_SHELL) $(MKIMAGE) -A unicore -O linux -T kernel \ - -C none -a $(LOADADDR) -e $(STARTADDR) \ - -n 'Linux-$(KERNELRELEASE)' -d $< $@ - -$(obj)/uImage: LOADADDR=0x0 - -$(obj)/uImage: STARTADDR=$(LOADADDR) +UIMAGE_ARCH = unicore +UIMAGE_LOADADDR = 0x0 $(obj)/uImage: $(obj)/zImage FORCE $(call if_changed,uimage) diff --git a/arch/unicore32/boot/compressed/Makefile b/arch/unicore32/boot/compressed/Makefile index 95373428cb3..96494fb646f 100644 --- a/arch/unicore32/boot/compressed/Makefile +++ b/arch/unicore32/boot/compressed/Makefile @@ -10,14 +10,14 @@ # Copyright (C) 2001~2010 GUAN Xue-tao # -EXTRA_CFLAGS := -fpic -fno-builtin -EXTRA_AFLAGS := -Wa,-march=all +ccflags-y := -fpic -fno-builtin +asflags-y := -Wa,-march=all OBJS := misc.o # font.c and font.o CFLAGS_font.o := -Dstatic= -$(obj)/font.c: $(srctree)/drivers/video/console/font_8x8.c +$(obj)/font.c: $(srctree)/lib/fonts/font_8x8.c $(call cmd,shipped) # piggy.S and piggy.o @@ -59,7 +59,7 @@ $(obj)/vmlinux: $(obj)/vmlinux.lds $(obj)/head.o $(obj)/piggy.o \ # We now have a PIC decompressor implementation. Decompressors running # from RAM should not define ZTEXTADDR. Decompressors running directly # from ROM or Flash must define ZTEXTADDR (preferably via the config) -ZTEXTADDR := 0 +ZTEXTADDR := 0x03000000 ZBSSADDR := ALIGN(4) SEDFLAGS_lds = s/TEXT_START/$(ZTEXTADDR)/;s/BSS_START/$(ZBSSADDR)/ diff --git a/arch/unicore32/configs/debug_defconfig b/arch/unicore32/configs/unicore32_defconfig index b5fbde9f1cb..45f47f88d86 100644 --- a/arch/unicore32/configs/debug_defconfig +++ b/arch/unicore32/configs/unicore32_defconfig @@ -1,6 +1,6 @@ ### General setup CONFIG_EXPERIMENTAL=y -CONFIG_LOCALVERSION="-debug" +CONFIG_LOCALVERSION="-unicore32" CONFIG_SWAP=y CONFIG_SYSVIPC=y CONFIG_POSIX_MQUEUE=y @@ -64,7 +64,6 @@ CONFIG_I2C_BATTERY_BQ27200=n CONFIG_I2C_EEPROM_AT24=n CONFIG_LCD_BACKLIGHT=n -CONFIG_PUV3_RTC=y CONFIG_PUV3_UMAL=y CONFIG_PUV3_MUSB=n CONFIG_PUV3_AC97=n @@ -150,7 +149,6 @@ CONFIG_SND_PCM_OSS=m # USB support CONFIG_USB_ARCH_HAS_HCD=n CONFIG_USB=n -CONFIG_USB_DEVICEFS=n CONFIG_USB_PRINTER=n CONFIG_USB_STORAGE=n # Inventra Highspeed Dual Role Controller @@ -167,8 +165,9 @@ CONFIG_LEDS_TRIGGER_IDE_DISK=y CONFIG_LEDS_TRIGGER_HEARTBEAT=y # Real Time Clock -CONFIG_RTC_LIB=m -CONFIG_RTC_CLASS=m +CONFIG_RTC_LIB=y +CONFIG_RTC_CLASS=y +CONFIG_RTC_DRV_PUV3=y ### File systems CONFIG_EXT2_FS=m diff --git a/arch/unicore32/include/asm/Kbuild b/arch/unicore32/include/asm/Kbuild index b200fdaca44..1e5fb872a4a 100644 --- a/arch/unicore32/include/asm/Kbuild +++ b/arch/unicore32/include/asm/Kbuild @@ -1,2 +1,65 @@ -include include/asm-generic/Kbuild.asm +generic-y += atomic.h +generic-y += auxvec.h +generic-y += bitsperlong.h +generic-y += bugs.h +generic-y += clkdev.h +generic-y += cputime.h +generic-y += current.h +generic-y += device.h +generic-y += div64.h +generic-y += emergency-restart.h +generic-y += errno.h +generic-y += exec.h +generic-y += fb.h +generic-y += fcntl.h +generic-y += ftrace.h +generic-y += futex.h +generic-y += hardirq.h +generic-y += hash.h +generic-y += hw_irq.h +generic-y += ioctl.h +generic-y += ioctls.h +generic-y += ipcbuf.h +generic-y += irq_regs.h +generic-y += kdebug.h +generic-y += kmap_types.h +generic-y += local.h +generic-y += mcs_spinlock.h +generic-y += mman.h +generic-y += module.h +generic-y += msgbuf.h +generic-y += param.h +generic-y += parport.h +generic-y += percpu.h +generic-y += poll.h +generic-y += posix_types.h +generic-y += preempt.h +generic-y += resource.h +generic-y += scatterlist.h +generic-y += sections.h +generic-y += segment.h +generic-y += sembuf.h +generic-y += serial.h +generic-y += setup.h +generic-y += shmbuf.h +generic-y += shmparam.h +generic-y += siginfo.h +generic-y += signal.h +generic-y += sizes.h +generic-y += socket.h +generic-y += sockios.h +generic-y += stat.h +generic-y += statfs.h +generic-y += swab.h +generic-y += syscalls.h +generic-y += termbits.h +generic-y += termios.h +generic-y += topology.h +generic-y += trace_clock.h +generic-y += types.h +generic-y += ucontext.h +generic-y += unaligned.h +generic-y += user.h +generic-y += vga.h +generic-y += xor.h diff --git a/arch/unicore32/include/asm/barrier.h b/arch/unicore32/include/asm/barrier.h new file mode 100644 index 00000000000..83d6a520f4b --- /dev/null +++ b/arch/unicore32/include/asm/barrier.h @@ -0,0 +1,19 @@ +/* + * Memory barrier implementations for PKUnity SoC and UniCore ISA + * + * Copyright (C) 2001-2012 GUAN Xue-tao + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ +#ifndef __UNICORE_BARRIER_H__ +#define __UNICORE_BARRIER_H__ + +#define isb() __asm__ __volatile__ ("" : : : "memory") +#define dsb() __asm__ __volatile__ ("" : : : "memory") +#define dmb() __asm__ __volatile__ ("" : : : "memory") + +#include <asm-generic/barrier.h> + +#endif /* __UNICORE_BARRIER_H__ */ diff --git a/arch/unicore32/include/asm/bitops.h b/arch/unicore32/include/asm/bitops.h index 1628a632899..401f597bc38 100644 --- a/arch/unicore32/include/asm/bitops.h +++ b/arch/unicore32/include/asm/bitops.h @@ -13,12 +13,6 @@ #ifndef __UNICORE_BITOPS_H__ #define __UNICORE_BITOPS_H__ -#define find_next_bit __uc32_find_next_bit -#define find_next_zero_bit __uc32_find_next_zero_bit - -#define find_first_bit __uc32_find_first_bit -#define find_first_zero_bit __uc32_find_first_zero_bit - #define _ASM_GENERIC_BITOPS_FLS_H_ #define _ASM_GENERIC_BITOPS___FLS_H_ #define _ASM_GENERIC_BITOPS_FFS_H_ @@ -44,4 +38,10 @@ static inline int fls(int x) #include <asm-generic/bitops.h> +/* following definitions: to avoid using codes in lib/find_*.c */ +#define find_next_bit find_next_bit +#define find_next_zero_bit find_next_zero_bit +#define find_first_bit find_first_bit +#define find_first_zero_bit find_first_zero_bit + #endif /* __UNICORE_BITOPS_H__ */ diff --git a/arch/unicore32/include/asm/bug.h b/arch/unicore32/include/asm/bug.h new file mode 100644 index 00000000000..93a56f3e234 --- /dev/null +++ b/arch/unicore32/include/asm/bug.h @@ -0,0 +1,22 @@ +/* + * Bug handling for PKUnity SoC and UniCore ISA + * + * Copyright (C) 2001-2012 GUAN Xue-tao + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ +#ifndef __UNICORE_BUG_H__ +#define __UNICORE_BUG_H__ + +#include <asm-generic/bug.h> + +struct pt_regs; +struct siginfo; + +extern void die(const char *msg, struct pt_regs *regs, int err); +extern void uc32_notify_die(const char *str, struct pt_regs *regs, + struct siginfo *info, unsigned long err, unsigned long trap); + +#endif /* __UNICORE_BUG_H__ */ diff --git a/arch/unicore32/include/asm/cmpxchg.h b/arch/unicore32/include/asm/cmpxchg.h new file mode 100644 index 00000000000..8e797ad4fa2 --- /dev/null +++ b/arch/unicore32/include/asm/cmpxchg.h @@ -0,0 +1,61 @@ +/* + * Atomics xchg/cmpxchg for PKUnity SoC and UniCore ISA + * + * Copyright (C) 2001-2012 GUAN Xue-tao + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ +#ifndef __UNICORE_CMPXCHG_H__ +#define __UNICORE_CMPXCHG_H__ + +/* + * Generate a link failure on undefined symbol if the pointer points to a value + * of unsupported size. + */ +extern void __xchg_bad_pointer(void); + +static inline unsigned long __xchg(unsigned long x, volatile void *ptr, + int size) +{ + unsigned long ret; + + switch (size) { + case 1: + asm volatile("swapb %0, %1, [%2]" + : "=&r" (ret) + : "r" (x), "r" (ptr) + : "memory", "cc"); + break; + case 4: + asm volatile("swapw %0, %1, [%2]" + : "=&r" (ret) + : "r" (x), "r" (ptr) + : "memory", "cc"); + break; + default: + __xchg_bad_pointer(); + } + + return ret; +} + +#define xchg(ptr, x) \ + ((__typeof__(*(ptr)))__xchg((unsigned long)(x), (ptr), sizeof(*(ptr)))) + +#include <asm-generic/cmpxchg-local.h> + +/* + * cmpxchg_local and cmpxchg64_local are atomic wrt current CPU. Always make + * them available. + */ +#define cmpxchg_local(ptr, o, n) \ + ((__typeof__(*(ptr)))__cmpxchg_local_generic((ptr), \ + (unsigned long)(o), (unsigned long)(n), sizeof(*(ptr)))) +#define cmpxchg64_local(ptr, o, n) \ + __cmpxchg64_local_generic((ptr), (o), (n)) + +#include <asm-generic/cmpxchg.h> + +#endif /* __UNICORE_CMPXCHG_H__ */ diff --git a/arch/unicore32/include/asm/dma-mapping.h b/arch/unicore32/include/asm/dma-mapping.h index 9258e592f41..366460a8179 100644 --- a/arch/unicore32/include/asm/dma-mapping.h +++ b/arch/unicore32/include/asm/dma-mapping.h @@ -82,20 +82,26 @@ static inline int dma_set_mask(struct device *dev, u64 dma_mask) return 0; } -static inline void *dma_alloc_coherent(struct device *dev, size_t size, - dma_addr_t *dma_handle, gfp_t flag) +#define dma_alloc_coherent(d,s,h,f) dma_alloc_attrs(d,s,h,f,NULL) + +static inline void *dma_alloc_attrs(struct device *dev, size_t size, + dma_addr_t *dma_handle, gfp_t flag, + struct dma_attrs *attrs) { struct dma_map_ops *dma_ops = get_dma_ops(dev); - return dma_ops->alloc_coherent(dev, size, dma_handle, flag); + return dma_ops->alloc(dev, size, dma_handle, flag, attrs); } -static inline void dma_free_coherent(struct device *dev, size_t size, - void *cpu_addr, dma_addr_t dma_handle) +#define dma_free_coherent(d,s,c,h) dma_free_attrs(d,s,c,h,NULL) + +static inline void dma_free_attrs(struct device *dev, size_t size, + void *cpu_addr, dma_addr_t dma_handle, + struct dma_attrs *attrs) { struct dma_map_ops *dma_ops = get_dma_ops(dev); - dma_ops->free_coherent(dev, size, cpu_addr, dma_handle); + dma_ops->free(dev, size, cpu_addr, dma_handle, attrs); } #define dma_alloc_noncoherent(d, s, h, f) dma_alloc_coherent(d, s, h, f) diff --git a/arch/unicore32/include/asm/hwdef-copro.h b/arch/unicore32/include/asm/hwdef-copro.h new file mode 100644 index 00000000000..a3292f039a6 --- /dev/null +++ b/arch/unicore32/include/asm/hwdef-copro.h @@ -0,0 +1,48 @@ +/* + * Co-processor register definitions for PKUnity SoC and UniCore ISA + * + * Copyright (C) 2001-2012 GUAN Xue-tao + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ +#ifndef __UNICORE_HWDEF_COPRO_H__ +#define __UNICORE_HWDEF_COPRO_H__ + +/* + * Control Register bits (CP#0 CR1) + */ +#define CR_M (1 << 0) /* MMU enable */ +#define CR_A (1 << 1) /* Alignment abort enable */ +#define CR_D (1 << 2) /* Dcache enable */ +#define CR_I (1 << 3) /* Icache enable */ +#define CR_B (1 << 4) /* Dcache write mechanism: write back */ +#define CR_T (1 << 5) /* Burst enable */ +#define CR_V (1 << 13) /* Vectors relocated to 0xffff0000 */ + +#ifndef __ASSEMBLY__ + +#define vectors_high() (cr_alignment & CR_V) + +extern unsigned long cr_no_alignment; /* defined in entry.S */ +extern unsigned long cr_alignment; /* defined in entry.S */ + +static inline unsigned int get_cr(void) +{ + unsigned int val; + asm("movc %0, p0.c1, #0" : "=r" (val) : : "cc"); + return val; +} + +static inline void set_cr(unsigned int val) +{ + asm volatile("movc p0.c1, %0, #0" : : "r" (val) : "cc"); + isb(); +} + +extern void adjust_cr(unsigned long mask, unsigned long set); + +#endif /* __ASSEMBLY__ */ + +#endif /* __UNICORE_HWDEF_COPRO_H__ */ diff --git a/arch/unicore32/include/asm/io.h b/arch/unicore32/include/asm/io.h index 4bd87f3d13d..cb1d8fd2b16 100644 --- a/arch/unicore32/include/asm/io.h +++ b/arch/unicore32/include/asm/io.h @@ -16,7 +16,6 @@ #include <asm/byteorder.h> #include <asm/memory.h> -#include <asm/system.h> #define PCI_IOBASE PKUNITY_PCILIO_BASE #include <asm-generic/io.h> @@ -32,24 +31,45 @@ extern void __uc32_iounmap(volatile void __iomem *addr); * ioremap and friends. * * ioremap takes a PCI memory address, as specified in - * Documentation/IO-mapping.txt. + * Documentation/io-mapping.txt. * */ #define ioremap(cookie, size) __uc32_ioremap(cookie, size) #define ioremap_cached(cookie, size) __uc32_ioremap_cached(cookie, size) +#define ioremap_nocache(cookie, size) __uc32_ioremap(cookie, size) #define iounmap(cookie) __uc32_iounmap(cookie) -/* - * Convert a physical pointer to a virtual kernel pointer for /dev/mem - * access - */ -#undef xlate_dev_mem_ptr -#define xlate_dev_mem_ptr(p) __va(p) +#define readb_relaxed readb +#define readw_relaxed readw +#define readl_relaxed readl #define HAVE_ARCH_PIO_SIZE #define PIO_OFFSET (unsigned int)(PCI_IOBASE) #define PIO_MASK (unsigned int)(IO_SPACE_LIMIT) #define PIO_RESERVED (PIO_OFFSET + PIO_MASK + 1) +#ifdef CONFIG_STRICT_DEVMEM + +#include <linux/ioport.h> +#include <linux/mm.h> + +/* + * devmem_is_allowed() checks to see if /dev/mem access to a certain + * address is valid. The argument is a physical page number. + * We mimic x86 here by disallowing access to system RAM as well as + * device-exclusive MMIO regions. This effectively disable read()/write() + * on /dev/mem. + */ +static inline int devmem_is_allowed(unsigned long pfn) +{ + if (iomem_is_exclusive(pfn << PAGE_SHIFT)) + return 0; + if (!page_is_ram(pfn)) + return 1; + return 0; +} + +#endif /* CONFIG_STRICT_DEVMEM */ + #endif /* __KERNEL__ */ #endif /* __UNICORE_IO_H__ */ diff --git a/arch/unicore32/include/asm/memory.h b/arch/unicore32/include/asm/memory.h index 5eddb997def..debafc40200 100644 --- a/arch/unicore32/include/asm/memory.h +++ b/arch/unicore32/include/asm/memory.h @@ -98,12 +98,6 @@ /* * Conversion between a struct page and a physical address. * - * Note: when converting an unknown physical address to a - * struct page, the resulting pointer must be validated - * using VALID_PAGE(). It must return an invalid struct page - * for any physical address not corresponding to a system - * RAM address. - * * page_to_pfn(page) convert a struct page * to a PFN number * pfn_to_page(pfn) convert a _valid_ PFN number to struct page * * diff --git a/arch/unicore32/include/asm/mmu_context.h b/arch/unicore32/include/asm/mmu_context.h index fb5e4c658f7..ef470a7a3d0 100644 --- a/arch/unicore32/include/asm/mmu_context.h +++ b/arch/unicore32/include/asm/mmu_context.h @@ -14,6 +14,8 @@ #include <linux/compiler.h> #include <linux/sched.h> +#include <linux/mm.h> +#include <linux/vmacache.h> #include <linux/io.h> #include <asm/cacheflush.h> @@ -73,7 +75,7 @@ do { \ else \ mm->mmap = NULL; \ rb_erase(&high_vma->vm_rb, &mm->mm_rb); \ - mm->mmap_cache = NULL; \ + vmacache_invalidate(mm); \ mm->map_count--; \ remove_vma(high_vma); \ } \ diff --git a/arch/unicore32/include/asm/pci.h b/arch/unicore32/include/asm/pci.h index c5b28b45953..654407e9861 100644 --- a/arch/unicore32/include/asm/pci.h +++ b/arch/unicore32/include/asm/pci.h @@ -14,19 +14,10 @@ #ifdef __KERNEL__ #include <asm-generic/pci-dma-compat.h> +#include <asm-generic/pci-bridge.h> #include <asm-generic/pci.h> #include <mach/hardware.h> /* for PCIBIOS_MIN_* */ -static inline void pcibios_set_master(struct pci_dev *dev) -{ - /* No special bus mastering setup handling */ -} - -static inline void pcibios_penalize_isa_irq(int irq, int active) -{ - /* We don't do dynamic PCI IRQ allocation */ -} - #ifdef CONFIG_PCI static inline void pci_dma_burst_advice(struct pci_dev *pdev, enum pci_dma_burst_strategy *strat, diff --git a/arch/unicore32/include/asm/pgalloc.h b/arch/unicore32/include/asm/pgalloc.h index 0213e373a89..2e02d1356fd 100644 --- a/arch/unicore32/include/asm/pgalloc.h +++ b/arch/unicore32/include/asm/pgalloc.h @@ -51,12 +51,14 @@ pte_alloc_one(struct mm_struct *mm, unsigned long addr) struct page *pte; pte = alloc_pages(PGALLOC_GFP, 0); - if (pte) { - if (!PageHighMem(pte)) { - void *page = page_address(pte); - clean_dcache_area(page, PTRS_PER_PTE * sizeof(pte_t)); - } - pgtable_page_ctor(pte); + if (!pte) + return NULL; + if (!PageHighMem(pte)) { + void *page = page_address(pte); + clean_dcache_area(page, PTRS_PER_PTE * sizeof(pte_t)); + } + if (!pgtable_page_ctor(pte)) { + __free_page(pte); } return pte; diff --git a/arch/unicore32/include/asm/pgtable.h b/arch/unicore32/include/asm/pgtable.h index 68b2f297ac9..ed6f7d000fb 100644 --- a/arch/unicore32/include/asm/pgtable.h +++ b/arch/unicore32/include/asm/pgtable.h @@ -87,16 +87,16 @@ extern pgprot_t pgprot_kernel; #define PAGE_NONE pgprot_user #define PAGE_SHARED __pgprot(pgprot_val(pgprot_user | PTE_READ \ - | PTE_WRITE) + | PTE_WRITE)) #define PAGE_SHARED_EXEC __pgprot(pgprot_val(pgprot_user | PTE_READ \ | PTE_WRITE \ - | PTE_EXEC) + | PTE_EXEC)) #define PAGE_COPY __pgprot(pgprot_val(pgprot_user | PTE_READ) #define PAGE_COPY_EXEC __pgprot(pgprot_val(pgprot_user | PTE_READ \ - | PTE_EXEC) -#define PAGE_READONLY __pgprot(pgprot_val(pgprot_user | PTE_READ) + | PTE_EXEC)) +#define PAGE_READONLY __pgprot(pgprot_val(pgprot_user | PTE_READ)) #define PAGE_READONLY_EXEC __pgprot(pgprot_val(pgprot_user | PTE_READ \ - | PTE_EXEC) + | PTE_EXEC)) #define PAGE_KERNEL pgprot_kernel #define PAGE_KERNEL_EXEC __pgprot(pgprot_val(pgprot_kernel | PTE_EXEC)) @@ -303,13 +303,6 @@ extern pgd_t swapper_pg_dir[PTRS_PER_PGD]; #include <asm-generic/pgtable.h> -/* - * remap a physical page `pfn' of size `size' with page protection `prot' - * into virtual address `from' - */ -#define io_remap_pfn_range(vma, from, pfn, size, prot) \ - remap_pfn_range(vma, from, pfn, size, prot) - #define pgtable_cache_init() do { } while (0) #endif /* !__ASSEMBLY__ */ diff --git a/arch/unicore32/include/asm/processor.h b/arch/unicore32/include/asm/processor.h index e11cb078657..4eaa4216766 100644 --- a/arch/unicore32/include/asm/processor.h +++ b/arch/unicore32/include/asm/processor.h @@ -53,7 +53,6 @@ struct thread_struct { #define start_thread(regs, pc, sp) \ ({ \ unsigned long *stack = (unsigned long *)sp; \ - set_fs(USER_DS); \ memset(regs->uregs, 0, sizeof(regs->uregs)); \ regs->UCreg_asr = USER_MODE; \ regs->UCreg_pc = pc & ~1; /* pc */ \ @@ -69,18 +68,10 @@ struct task_struct; /* Free all resources held by a thread. */ extern void release_thread(struct task_struct *); -/* Prepare to copy thread state - unlazy all lazy status */ -#define prepare_to_copy(tsk) do { } while (0) - unsigned long get_wchan(struct task_struct *p); #define cpu_relax() barrier() -/* - * Create a new kernel thread - */ -extern int kernel_thread(int (*fn)(void *), void *arg, unsigned long flags); - #define task_pt_regs(p) \ ((struct pt_regs *)(THREAD_START_SP + task_stack_page(p)) - 1) diff --git a/arch/unicore32/include/asm/ptrace.h b/arch/unicore32/include/asm/ptrace.h index b9caf9b0997..02bf5a415bf 100644 --- a/arch/unicore32/include/asm/ptrace.h +++ b/arch/unicore32/include/asm/ptrace.h @@ -12,80 +12,10 @@ #ifndef __UNICORE_PTRACE_H__ #define __UNICORE_PTRACE_H__ -#define PTRACE_GET_THREAD_AREA 22 - -/* - * PSR bits - */ -#define USER_MODE 0x00000010 -#define REAL_MODE 0x00000011 -#define INTR_MODE 0x00000012 -#define PRIV_MODE 0x00000013 -#define ABRT_MODE 0x00000017 -#define EXTN_MODE 0x0000001b -#define SUSR_MODE 0x0000001f -#define MODE_MASK 0x0000001f -#define PSR_R_BIT 0x00000040 -#define PSR_I_BIT 0x00000080 -#define PSR_V_BIT 0x10000000 -#define PSR_C_BIT 0x20000000 -#define PSR_Z_BIT 0x40000000 -#define PSR_S_BIT 0x80000000 - -/* - * Groups of PSR bits - */ -#define PSR_f 0xff000000 /* Flags */ -#define PSR_c 0x000000ff /* Control */ +#include <uapi/asm/ptrace.h> #ifndef __ASSEMBLY__ -/* - * This struct defines the way the registers are stored on the - * stack during a system call. Note that sizeof(struct pt_regs) - * has to be a multiple of 8. - */ -struct pt_regs { - unsigned long uregs[34]; -}; - -#define UCreg_asr uregs[32] -#define UCreg_pc uregs[31] -#define UCreg_lr uregs[30] -#define UCreg_sp uregs[29] -#define UCreg_ip uregs[28] -#define UCreg_fp uregs[27] -#define UCreg_26 uregs[26] -#define UCreg_25 uregs[25] -#define UCreg_24 uregs[24] -#define UCreg_23 uregs[23] -#define UCreg_22 uregs[22] -#define UCreg_21 uregs[21] -#define UCreg_20 uregs[20] -#define UCreg_19 uregs[19] -#define UCreg_18 uregs[18] -#define UCreg_17 uregs[17] -#define UCreg_16 uregs[16] -#define UCreg_15 uregs[15] -#define UCreg_14 uregs[14] -#define UCreg_13 uregs[13] -#define UCreg_12 uregs[12] -#define UCreg_11 uregs[11] -#define UCreg_10 uregs[10] -#define UCreg_09 uregs[9] -#define UCreg_08 uregs[8] -#define UCreg_07 uregs[7] -#define UCreg_06 uregs[6] -#define UCreg_05 uregs[5] -#define UCreg_04 uregs[4] -#define UCreg_03 uregs[3] -#define UCreg_02 uregs[2] -#define UCreg_01 uregs[1] -#define UCreg_00 uregs[0] -#define UCreg_ORIG_00 uregs[33] - -#ifdef __KERNEL__ - #define user_mode(regs) \ (processor_mode(regs) == USER_MODE) @@ -124,10 +54,8 @@ static inline int valid_user_regs(struct pt_regs *regs) } #define instruction_pointer(regs) ((regs)->UCreg_pc) - -#endif /* __KERNEL__ */ +#define user_stack_pointer(regs) ((regs)->UCreg_sp) +#define profile_pc(regs) instruction_pointer(regs) #endif /* __ASSEMBLY__ */ - #endif - diff --git a/arch/unicore32/include/asm/suspend.h b/arch/unicore32/include/asm/suspend.h index 88a9c0f32b2..65bad75c7e9 100644 --- a/arch/unicore32/include/asm/suspend.h +++ b/arch/unicore32/include/asm/suspend.h @@ -14,7 +14,6 @@ #define __UNICORE_SUSPEND_H__ #ifndef __ASSEMBLY__ -static inline int arch_prepare_suspend(void) { return 0; } #include <asm/ptrace.h> diff --git a/arch/unicore32/include/asm/switch_to.h b/arch/unicore32/include/asm/switch_to.h new file mode 100644 index 00000000000..39572d2bd69 --- /dev/null +++ b/arch/unicore32/include/asm/switch_to.h @@ -0,0 +1,30 @@ +/* + * Task switching for PKUnity SoC and UniCore ISA + * + * Copyright (C) 2001-2012 GUAN Xue-tao + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ +#ifndef __UNICORE_SWITCH_TO_H__ +#define __UNICORE_SWITCH_TO_H__ + +struct task_struct; +struct thread_info; + +/* + * switch_to(prev, next) should switch from task `prev' to `next' + * `prev' will never be the same as `next'. schedule() itself + * contains the memory barrier to tell GCC not to cache `current'. + */ +extern struct task_struct *__switch_to(struct task_struct *, + struct thread_info *, struct thread_info *); + +#define switch_to(prev, next, last) \ + do { \ + last = __switch_to(prev, task_thread_info(prev), \ + task_thread_info(next)); \ + } while (0) + +#endif /* __UNICORE_SWITCH_TO_H__ */ diff --git a/arch/unicore32/include/asm/system.h b/arch/unicore32/include/asm/system.h deleted file mode 100644 index 246b71c17fd..00000000000 --- a/arch/unicore32/include/asm/system.h +++ /dev/null @@ -1,161 +0,0 @@ -/* - * linux/arch/unicore32/include/asm/system.h - * - * Code specific to PKUnity SoC and UniCore ISA - * - * Copyright (C) 2001-2010 GUAN Xue-tao - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - */ -#ifndef __UNICORE_SYSTEM_H__ -#define __UNICORE_SYSTEM_H__ - -#ifdef __KERNEL__ - -/* - * CR1 bits (CP#0 CR1) - */ -#define CR_M (1 << 0) /* MMU enable */ -#define CR_A (1 << 1) /* Alignment abort enable */ -#define CR_D (1 << 2) /* Dcache enable */ -#define CR_I (1 << 3) /* Icache enable */ -#define CR_B (1 << 4) /* Dcache write mechanism: write back */ -#define CR_T (1 << 5) /* Burst enable */ -#define CR_V (1 << 13) /* Vectors relocated to 0xffff0000 */ - -#ifndef __ASSEMBLY__ - -#include <linux/linkage.h> -#include <linux/irqflags.h> - -struct thread_info; -struct task_struct; - -struct pt_regs; - -void die(const char *msg, struct pt_regs *regs, int err); - -struct siginfo; -void uc32_notify_die(const char *str, struct pt_regs *regs, - struct siginfo *info, unsigned long err, unsigned long trap); - -void hook_fault_code(int nr, int (*fn)(unsigned long, unsigned int, - struct pt_regs *), - int sig, int code, const char *name); - -#define xchg(ptr, x) \ - ((__typeof__(*(ptr)))__xchg((unsigned long)(x), (ptr), sizeof(*(ptr)))) - -extern asmlinkage void __backtrace(void); -extern asmlinkage void c_backtrace(unsigned long fp, int pmode); - -struct mm_struct; -extern void show_pte(struct mm_struct *mm, unsigned long addr); -extern void __show_regs(struct pt_regs *); - -extern int cpu_architecture(void); -extern void cpu_init(void); - -#define vectors_high() (cr_alignment & CR_V) - -#define isb() __asm__ __volatile__ ("" : : : "memory") -#define dsb() __asm__ __volatile__ ("" : : : "memory") -#define dmb() __asm__ __volatile__ ("" : : : "memory") - -#define mb() barrier() -#define rmb() barrier() -#define wmb() barrier() -#define smp_mb() barrier() -#define smp_rmb() barrier() -#define smp_wmb() barrier() -#define read_barrier_depends() do { } while (0) -#define smp_read_barrier_depends() do { } while (0) - -#define set_mb(var, value) do { var = value; smp_mb(); } while (0) -#define nop() __asm__ __volatile__("mov\tr0,r0\t@ nop\n\t"); - -extern unsigned long cr_no_alignment; /* defined in entry-unicore.S */ -extern unsigned long cr_alignment; /* defined in entry-unicore.S */ - -static inline unsigned int get_cr(void) -{ - unsigned int val; - asm("movc %0, p0.c1, #0" : "=r" (val) : : "cc"); - return val; -} - -static inline void set_cr(unsigned int val) -{ - asm volatile("movc p0.c1, %0, #0 @set CR" - : : "r" (val) : "cc"); - isb(); -} - -extern void adjust_cr(unsigned long mask, unsigned long set); - -/* - * switch_to(prev, next) should switch from task `prev' to `next' - * `prev' will never be the same as `next'. schedule() itself - * contains the memory barrier to tell GCC not to cache `current'. - */ -extern struct task_struct *__switch_to(struct task_struct *, - struct thread_info *, struct thread_info *); -extern void panic(const char *fmt, ...); - -#define switch_to(prev, next, last) \ -do { \ - last = __switch_to(prev, \ - task_thread_info(prev), task_thread_info(next)); \ -} while (0) - -static inline unsigned long -__xchg(unsigned long x, volatile void *ptr, int size) -{ - unsigned long ret; - - switch (size) { - case 1: - asm volatile("@ __xchg1\n" - " swapb %0, %1, [%2]" - : "=&r" (ret) - : "r" (x), "r" (ptr) - : "memory", "cc"); - break; - case 4: - asm volatile("@ __xchg4\n" - " swapw %0, %1, [%2]" - : "=&r" (ret) - : "r" (x), "r" (ptr) - : "memory", "cc"); - break; - default: - panic("xchg: bad data size: ptr 0x%p, size %d\n", - ptr, size); - } - - return ret; -} - -#include <asm-generic/cmpxchg-local.h> - -/* - * cmpxchg_local and cmpxchg64_local are atomic wrt current CPU. Always make - * them available. - */ -#define cmpxchg_local(ptr, o, n) \ - ((__typeof__(*(ptr)))__cmpxchg_local_generic((ptr), \ - (unsigned long)(o), (unsigned long)(n), sizeof(*(ptr)))) -#define cmpxchg64_local(ptr, o, n) \ - __cmpxchg64_local_generic((ptr), (o), (n)) - -#include <asm-generic/cmpxchg.h> - -#endif /* __ASSEMBLY__ */ - -#define arch_align_stack(x) (x) - -#endif /* __KERNEL__ */ - -#endif diff --git a/arch/unicore32/include/asm/thread_info.h b/arch/unicore32/include/asm/thread_info.h index c270e9e0486..af36d8eabdf 100644 --- a/arch/unicore32/include/asm/thread_info.h +++ b/arch/unicore32/include/asm/thread_info.h @@ -118,12 +118,6 @@ static inline struct thread_info *current_thread_info(void) #endif /* - * We use bit 30 of the preempt_count to indicate that kernel - * preemption is occurring. See <asm/hardirq.h>. - */ -#define PREEMPT_ACTIVE 0x40000000 - -/* * thread information flags: * TIF_SYSCALL_TRACE - syscall trace active * TIF_SIGPENDING - signal pending @@ -135,20 +129,18 @@ static inline struct thread_info *current_thread_info(void) #define TIF_NOTIFY_RESUME 2 /* callback before returning to user */ #define TIF_SYSCALL_TRACE 8 #define TIF_MEMDIE 18 -#define TIF_FREEZE 19 #define TIF_RESTORE_SIGMASK 20 #define _TIF_SIGPENDING (1 << TIF_SIGPENDING) #define _TIF_NEED_RESCHED (1 << TIF_NEED_RESCHED) #define _TIF_NOTIFY_RESUME (1 << TIF_NOTIFY_RESUME) #define _TIF_SYSCALL_TRACE (1 << TIF_SYSCALL_TRACE) -#define _TIF_FREEZE (1 << TIF_FREEZE) -#define _TIF_RESTORE_SIGMASK (1 << TIF_RESTORE_SIGMASK) /* * Change these and you break ASM code in entry-common.S */ -#define _TIF_WORK_MASK 0x000000ff +#define _TIF_WORK_MASK \ + (_TIF_SIGPENDING | _TIF_NEED_RESCHED | _TIF_NOTIFY_RESUME) #endif /* __KERNEL__ */ #endif /* __UNICORE_THREAD_INFO_H__ */ diff --git a/arch/unicore32/include/asm/uaccess.h b/arch/unicore32/include/asm/uaccess.h index 2acda503a6d..897e11ad812 100644 --- a/arch/unicore32/include/asm/uaccess.h +++ b/arch/unicore32/include/asm/uaccess.h @@ -16,7 +16,6 @@ #include <linux/errno.h> #include <asm/memory.h> -#include <asm/system.h> #define __copy_from_user __copy_from_user #define __copy_to_user __copy_to_user diff --git a/arch/unicore32/include/mach/PKUnity.h b/arch/unicore32/include/mach/PKUnity.h index 8040d575ddd..46705afcbf5 100644 --- a/arch/unicore32/include/mach/PKUnity.h +++ b/arch/unicore32/include/mach/PKUnity.h @@ -15,7 +15,7 @@ #error You must include hardware.h not PKUnity.h #endif -#include "bitfield.h" +#include <mach/bitfield.h> /* * Memory Definitions @@ -32,7 +32,7 @@ * 0x98000000 - 0x9FFFFFFF 128MB PCI PCI-AHB MEM-mapping */ #define PKUNITY_PCI_BASE io_p2v(0x80000000) /* 0x80000000 - 0xBFFFFFFF 1GB */ -#include "regs-pci.h" +#include <mach/regs-pci.h> #define PKUNITY_PCICFG_BASE (PKUNITY_PCI_BASE + 0x0) #define PKUNITY_PCIBRI_BASE (PKUNITY_PCI_BASE + 0x00010000) @@ -50,18 +50,18 @@ #define PKUNITY_ARBITER_BASE (PKUNITY_AHB_BASE + 0x000000) /* AHB-2 */ #define PKUNITY_DDR2CTRL_BASE (PKUNITY_AHB_BASE + 0x100000) /* AHB-3 */ #define PKUNITY_DMAC_BASE (PKUNITY_AHB_BASE + 0x200000) /* AHB-4 */ -#include "regs-dmac.h" +#include <mach/regs-dmac.h> #define PKUNITY_UMAL_BASE (PKUNITY_AHB_BASE + 0x300000) /* AHB-5 */ -#include "regs-umal.h" +#include <mach/regs-umal.h> #define PKUNITY_USB_BASE (PKUNITY_AHB_BASE + 0x400000) /* AHB-6 */ #define PKUNITY_SATA_BASE (PKUNITY_AHB_BASE + 0x500000) /* AHB-7 */ #define PKUNITY_SMC_BASE (PKUNITY_AHB_BASE + 0x600000) /* AHB-8 */ /* AHB-9 is for APB bridge */ #define PKUNITY_MME_BASE (PKUNITY_AHB_BASE + 0x700000) /* AHB-10 */ #define PKUNITY_UNIGFX_BASE (PKUNITY_AHB_BASE + 0x800000) /* AHB-11 */ -#include "regs-unigfx.h" +#include <mach/regs-unigfx.h> #define PKUNITY_NAND_BASE (PKUNITY_AHB_BASE + 0x900000) /* AHB-12 */ -#include "regs-nand.h" +#include <mach/regs-nand.h> #define PKUNITY_H264D_BASE (PKUNITY_AHB_BASE + 0xA00000) /* AHB-13 */ #define PKUNITY_H264E_BASE (PKUNITY_AHB_BASE + 0xB00000) /* AHB-14 */ @@ -72,27 +72,27 @@ #define PKUNITY_UART0_BASE (PKUNITY_APB_BASE + 0x000000) /* APB-0 */ #define PKUNITY_UART1_BASE (PKUNITY_APB_BASE + 0x100000) /* APB-1 */ -#include "regs-uart.h" +#include <mach/regs-uart.h> #define PKUNITY_I2C_BASE (PKUNITY_APB_BASE + 0x200000) /* APB-2 */ -#include "regs-i2c.h" +#include <mach/regs-i2c.h> #define PKUNITY_SPI_BASE (PKUNITY_APB_BASE + 0x300000) /* APB-3 */ -#include "regs-spi.h" +#include <mach/regs-spi.h> #define PKUNITY_AC97_BASE (PKUNITY_APB_BASE + 0x400000) /* APB-4 */ -#include "regs-ac97.h" +#include <mach/regs-ac97.h> #define PKUNITY_GPIO_BASE (PKUNITY_APB_BASE + 0x500000) /* APB-5 */ -#include "regs-gpio.h" +#include <mach/regs-gpio.h> #define PKUNITY_INTC_BASE (PKUNITY_APB_BASE + 0x600000) /* APB-6 */ -#include "regs-intc.h" +#include <mach/regs-intc.h> #define PKUNITY_RTC_BASE (PKUNITY_APB_BASE + 0x700000) /* APB-7 */ -#include "regs-rtc.h" +#include <mach/regs-rtc.h> #define PKUNITY_OST_BASE (PKUNITY_APB_BASE + 0x800000) /* APB-8 */ -#include "regs-ost.h" +#include <mach/regs-ost.h> #define PKUNITY_RESETC_BASE (PKUNITY_APB_BASE + 0x900000) /* APB-9 */ -#include "regs-resetc.h" +#include <mach/regs-resetc.h> #define PKUNITY_PM_BASE (PKUNITY_APB_BASE + 0xA00000) /* APB-10 */ -#include "regs-pm.h" +#include <mach/regs-pm.h> #define PKUNITY_PS2_BASE (PKUNITY_APB_BASE + 0xB00000) /* APB-11 */ -#include "regs-ps2.h" +#include <mach/regs-ps2.h> #define PKUNITY_SDC_BASE (PKUNITY_APB_BASE + 0xC00000) /* APB-12 */ -#include "regs-sdc.h" +#include <mach/regs-sdc.h> diff --git a/arch/unicore32/include/mach/hardware.h b/arch/unicore32/include/mach/hardware.h index 930bea6e129..9e20b5d9ed5 100644 --- a/arch/unicore32/include/mach/hardware.h +++ b/arch/unicore32/include/mach/hardware.h @@ -15,7 +15,7 @@ #ifndef __MACH_PUV3_HARDWARE_H__ #define __MACH_PUV3_HARDWARE_H__ -#include "PKUnity.h" +#include <mach/PKUnity.h> #ifndef __ASSEMBLY__ #define io_p2v(x) (void __iomem *)((x) - PKUNITY_MMIO_BASE) diff --git a/arch/unicore32/include/mach/regs-ost.h b/arch/unicore32/include/mach/regs-ost.h index 7b91fe698ee..4a85fb46384 100644 --- a/arch/unicore32/include/mach/regs-ost.h +++ b/arch/unicore32/include/mach/regs-ost.h @@ -33,18 +33,16 @@ * Interrupt Enable Reg OST_OIER */ #define OST_OIER (PKUNITY_OST_BASE + 0x001C) + /* - * PWM Pulse Width Control Reg OST_PWMPWCR - */ -#define OST_PWMPWCR (PKUNITY_OST_BASE + 0x0080) -/* - * PWM Duty Cycle Control Reg OST_PWMDCCR - */ -#define OST_PWMDCCR (PKUNITY_OST_BASE + 0x0084) -/* - * PWM Period Control Reg OST_PWMPCR + * PWM Registers: IO base address: PKUNITY_OST_BASE + 0x80 + * PWCR: Pulse Width Control Reg + * DCCR: Duty Cycle Control Reg + * PCR: Period Control Reg */ -#define OST_PWMPCR (PKUNITY_OST_BASE + 0x0088) +#define OST_PWM_PWCR (0x00) +#define OST_PWM_DCCR (0x04) +#define OST_PWM_PCR (0x08) /* * Match detected 0 OST_OSSR_M0 diff --git a/arch/unicore32/include/mach/uncompress.h b/arch/unicore32/include/mach/uncompress.h index 142d3e7958a..9be67c9d3b5 100644 --- a/arch/unicore32/include/mach/uncompress.h +++ b/arch/unicore32/include/mach/uncompress.h @@ -13,8 +13,8 @@ #ifndef __MACH_PUV3_UNCOMPRESS_H__ #define __MACH_PUV3_UNCOMPRESS_H__ -#include "hardware.h" -#include "ocd.h" +#include <mach/hardware.h> +#include <mach/ocd.h> extern char input_data[]; extern char input_data_end[]; diff --git a/arch/unicore32/include/uapi/asm/Kbuild b/arch/unicore32/include/uapi/asm/Kbuild new file mode 100644 index 00000000000..0514d7ad685 --- /dev/null +++ b/arch/unicore32/include/uapi/asm/Kbuild @@ -0,0 +1,10 @@ +# UAPI Header export list +include include/uapi/asm-generic/Kbuild.asm + +header-y += byteorder.h +header-y += kvm_para.h +header-y += ptrace.h +header-y += sigcontext.h +header-y += unistd.h + +generic-y += kvm_para.h diff --git a/arch/unicore32/include/asm/byteorder.h b/arch/unicore32/include/uapi/asm/byteorder.h index ebe1b3fef3e..ebe1b3fef3e 100644 --- a/arch/unicore32/include/asm/byteorder.h +++ b/arch/unicore32/include/uapi/asm/byteorder.h diff --git a/arch/unicore32/include/uapi/asm/ptrace.h b/arch/unicore32/include/uapi/asm/ptrace.h new file mode 100644 index 00000000000..187aa2e98a5 --- /dev/null +++ b/arch/unicore32/include/uapi/asm/ptrace.h @@ -0,0 +1,90 @@ +/* + * linux/arch/unicore32/include/asm/ptrace.h + * + * Code specific to PKUnity SoC and UniCore ISA + * + * Copyright (C) 2001-2010 GUAN Xue-tao + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ +#ifndef _UAPI__UNICORE_PTRACE_H__ +#define _UAPI__UNICORE_PTRACE_H__ + +#define PTRACE_GET_THREAD_AREA 22 + +/* + * PSR bits + */ +#define USER_MODE 0x00000010 +#define REAL_MODE 0x00000011 +#define INTR_MODE 0x00000012 +#define PRIV_MODE 0x00000013 +#define ABRT_MODE 0x00000017 +#define EXTN_MODE 0x0000001b +#define SUSR_MODE 0x0000001f +#define MODE_MASK 0x0000001f +#define PSR_R_BIT 0x00000040 +#define PSR_I_BIT 0x00000080 +#define PSR_V_BIT 0x10000000 +#define PSR_C_BIT 0x20000000 +#define PSR_Z_BIT 0x40000000 +#define PSR_S_BIT 0x80000000 + +/* + * Groups of PSR bits + */ +#define PSR_f 0xff000000 /* Flags */ +#define PSR_c 0x000000ff /* Control */ + +#ifndef __ASSEMBLY__ + +/* + * This struct defines the way the registers are stored on the + * stack during a system call. Note that sizeof(struct pt_regs) + * has to be a multiple of 8. + */ +struct pt_regs { + unsigned long uregs[34]; +}; + +#define UCreg_asr uregs[32] +#define UCreg_pc uregs[31] +#define UCreg_lr uregs[30] +#define UCreg_sp uregs[29] +#define UCreg_ip uregs[28] +#define UCreg_fp uregs[27] +#define UCreg_26 uregs[26] +#define UCreg_25 uregs[25] +#define UCreg_24 uregs[24] +#define UCreg_23 uregs[23] +#define UCreg_22 uregs[22] +#define UCreg_21 uregs[21] +#define UCreg_20 uregs[20] +#define UCreg_19 uregs[19] +#define UCreg_18 uregs[18] +#define UCreg_17 uregs[17] +#define UCreg_16 uregs[16] +#define UCreg_15 uregs[15] +#define UCreg_14 uregs[14] +#define UCreg_13 uregs[13] +#define UCreg_12 uregs[12] +#define UCreg_11 uregs[11] +#define UCreg_10 uregs[10] +#define UCreg_09 uregs[9] +#define UCreg_08 uregs[8] +#define UCreg_07 uregs[7] +#define UCreg_06 uregs[6] +#define UCreg_05 uregs[5] +#define UCreg_04 uregs[4] +#define UCreg_03 uregs[3] +#define UCreg_02 uregs[2] +#define UCreg_01 uregs[1] +#define UCreg_00 uregs[0] +#define UCreg_ORIG_00 uregs[33] + + +#endif /* __ASSEMBLY__ */ + +#endif /* _UAPI__UNICORE_PTRACE_H__ */ diff --git a/arch/unicore32/include/asm/sigcontext.h b/arch/unicore32/include/uapi/asm/sigcontext.h index 6a2d7671c05..6a2d7671c05 100644 --- a/arch/unicore32/include/asm/sigcontext.h +++ b/arch/unicore32/include/uapi/asm/sigcontext.h diff --git a/arch/unicore32/include/asm/unistd.h b/arch/unicore32/include/uapi/asm/unistd.h index 9b242801996..d4cc4559d84 100644 --- a/arch/unicore32/include/asm/unistd.h +++ b/arch/unicore32/include/uapi/asm/unistd.h @@ -9,10 +9,7 @@ * it under the terms of the GNU General Public License version 2 as * published by the Free Software Foundation. */ -#if !defined(__UNICORE_UNISTD_H__) || defined(__SYSCALL) -#define __UNICORE_UNISTD_H__ /* Use the standard ABI for syscalls. */ #include <asm-generic/unistd.h> - -#endif /* __UNICORE_UNISTD_H__ */ +#define __ARCH_WANT_SYS_CLONE diff --git a/arch/unicore32/kernel/Makefile b/arch/unicore32/kernel/Makefile index ec23a2fb2f5..607a72f2ae3 100644 --- a/arch/unicore32/kernel/Makefile +++ b/arch/unicore32/kernel/Makefile @@ -9,15 +9,12 @@ obj-y += setup.o signal.o sys.o stacktrace.o traps.o obj-$(CONFIG_MODULES) += ksyms.o module.o obj-$(CONFIG_EARLY_PRINTK) += early_printk.o -obj-$(CONFIG_CPU_FREQ) += cpu-ucv2.o obj-$(CONFIG_UNICORE_FPU_F64) += fpu-ucf64.o # obj-y for architecture PKUnity v3 obj-$(CONFIG_ARCH_PUV3) += clock.o irq.o time.o obj-$(CONFIG_PUV3_GPIO) += gpio.o -obj-$(CONFIG_PUV3_RTC) += rtc.o -obj-$(CONFIG_PUV3_PWM) += pwm.o obj-$(CONFIG_PUV3_PM) += pm.o sleep.o obj-$(CONFIG_HIBERNATION) += hibernate.o hibernate_asm.o @@ -30,4 +27,4 @@ obj-$(CONFIG_PUV3_NB0916) += puv3-nb0916.o head-y := head.o obj-$(CONFIG_DEBUG_LL) += debug.o -extra-y := $(head-y) init_task.o vmlinux.lds +extra-y := $(head-y) vmlinux.lds diff --git a/arch/unicore32/kernel/clock.c b/arch/unicore32/kernel/clock.c index 18d4563e6fa..b1ca775f6f6 100644 --- a/arch/unicore32/kernel/clock.c +++ b/arch/unicore32/kernel/clock.c @@ -179,7 +179,7 @@ int clk_set_rate(struct clk *clk, unsigned long rate) } #ifdef CONFIG_CPU_FREQ if (clk == &clk_mclk_clk) { - u32 pll_rate, divstatus = PM_DIVSTATUS; + u32 pll_rate, divstatus = readl(PM_DIVSTATUS); int ret, i; /* lookup mclk_clk_table */ @@ -201,10 +201,10 @@ int clk_set_rate(struct clk *clk, unsigned long rate) / (((divstatus & 0x0000f000) >> 12) + 1); /* set pll sys cfg reg. */ - PM_PLLSYSCFG = pll_rate; + writel(pll_rate, PM_PLLSYSCFG); - PM_PMCR = PM_PMCR_CFBSYS; - while ((PM_PLLDFCDONE & PM_PLLDFCDONE_SYSDFC) + writel(PM_PMCR_CFBSYS, PM_PMCR); + while ((readl(PM_PLLDFCDONE) & PM_PLLDFCDONE_SYSDFC) != PM_PLLDFCDONE_SYSDFC) udelay(100); /* about 1ms */ diff --git a/arch/unicore32/kernel/cpu-ucv2.c b/arch/unicore32/kernel/cpu-ucv2.c deleted file mode 100644 index 4a99f62584c..00000000000 --- a/arch/unicore32/kernel/cpu-ucv2.c +++ /dev/null @@ -1,93 +0,0 @@ -/* - * linux/arch/unicore32/kernel/cpu-ucv2.c: clock scaling for the UniCore-II - * - * Code specific to PKUnity SoC and UniCore ISA - * - * Maintained by GUAN Xue-tao <gxt@mprc.pku.edu.cn> - * Copyright (C) 2001-2010 Guan Xuetao - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - */ - -#include <linux/kernel.h> -#include <linux/types.h> -#include <linux/init.h> -#include <linux/clk.h> -#include <linux/cpufreq.h> - -#include <mach/hardware.h> - -static struct cpufreq_driver ucv2_driver; - -/* make sure that only the "userspace" governor is run - * -- anything else wouldn't make sense on this platform, anyway. - */ -int ucv2_verify_speed(struct cpufreq_policy *policy) -{ - if (policy->cpu) - return -EINVAL; - - cpufreq_verify_within_limits(policy, - policy->cpuinfo.min_freq, policy->cpuinfo.max_freq); - - return 0; -} - -static unsigned int ucv2_getspeed(unsigned int cpu) -{ - struct clk *mclk = clk_get(NULL, "MAIN_CLK"); - - if (cpu) - return 0; - return clk_get_rate(mclk)/1000; -} - -static int ucv2_target(struct cpufreq_policy *policy, - unsigned int target_freq, - unsigned int relation) -{ - unsigned int cur = ucv2_getspeed(0); - struct cpufreq_freqs freqs; - struct clk *mclk = clk_get(NULL, "MAIN_CLK"); - - cpufreq_notify_transition(&freqs, CPUFREQ_PRECHANGE); - - if (!clk_set_rate(mclk, target_freq * 1000)) { - freqs.old = cur; - freqs.new = target_freq; - freqs.cpu = 0; - } - - cpufreq_notify_transition(&freqs, CPUFREQ_POSTCHANGE); - - return 0; -} - -static int __init ucv2_cpu_init(struct cpufreq_policy *policy) -{ - if (policy->cpu != 0) - return -EINVAL; - policy->cur = ucv2_getspeed(0); - policy->min = policy->cpuinfo.min_freq = 250000; - policy->max = policy->cpuinfo.max_freq = 1000000; - policy->cpuinfo.transition_latency = CPUFREQ_ETERNAL; - return 0; -} - -static struct cpufreq_driver ucv2_driver = { - .flags = CPUFREQ_STICKY, - .verify = ucv2_verify_speed, - .target = ucv2_target, - .get = ucv2_getspeed, - .init = ucv2_cpu_init, - .name = "UniCore-II", -}; - -static int __init ucv2_cpufreq_init(void) -{ - return cpufreq_register_driver(&ucv2_driver); -} - -arch_initcall(ucv2_cpufreq_init); diff --git a/arch/unicore32/kernel/dma.c b/arch/unicore32/kernel/dma.c index ae441bc3122..ed2d4d78d9c 100644 --- a/arch/unicore32/kernel/dma.c +++ b/arch/unicore32/kernel/dma.c @@ -18,7 +18,6 @@ #include <linux/errno.h> #include <linux/io.h> -#include <asm/system.h> #include <asm/irq.h> #include <mach/hardware.h> #include <mach/dma.h> diff --git a/arch/unicore32/kernel/early_printk.c b/arch/unicore32/kernel/early_printk.c index 3922255f1fa..f2f6323c8d6 100644 --- a/arch/unicore32/kernel/early_printk.c +++ b/arch/unicore32/kernel/early_printk.c @@ -33,23 +33,13 @@ static struct console early_ocd_console = { .index = -1, }; -/* Direct interface for emergencies */ -static struct console *early_console = &early_ocd_console; - -static int __initdata keep_early; - static int __init setup_early_printk(char *buf) { - if (!buf) + if (!buf || early_console) return 0; + early_console = &early_ocd_console; if (strstr(buf, "keep")) - keep_early = 1; - - if (!strncmp(buf, "ocd", 3)) - early_console = &early_ocd_console; - - if (keep_early) early_console->flags &= ~CON_BOOT; else early_console->flags |= CON_BOOT; diff --git a/arch/unicore32/kernel/entry.S b/arch/unicore32/kernel/entry.S index 00a259f9819..bcdedd80890 100644 --- a/arch/unicore32/kernel/entry.S +++ b/arch/unicore32/kernel/entry.S @@ -544,8 +544,6 @@ fast_work_pending: work_pending: cand.a r1, #_TIF_NEED_RESCHED bne work_resched - cand.a r1, #_TIF_SIGPENDING|_TIF_NOTIFY_RESUME - beq no_work_pending mov r0, sp @ 'regs' mov r2, why @ 'syscall' cand.a r1, #_TIF_SIGPENDING @ delivering a signal? @@ -575,17 +573,16 @@ ENDPROC(ret_to_user) */ ENTRY(ret_from_fork) b.l schedule_tail - get_thread_info tsk - ldw r1, [tsk+], #TI_FLAGS @ check for syscall tracing - mov why, #1 - cand.a r1, #_TIF_SYSCALL_TRACE @ are we tracing syscalls? - beq ret_slow_syscall - mov r1, sp - mov r0, #1 @ trace exit [IP = 1] - b.l syscall_trace b ret_slow_syscall ENDPROC(ret_from_fork) +ENTRY(ret_from_kernel_thread) + b.l schedule_tail + mov r0, r5 + adr lr, ret_slow_syscall + mov pc, r4 +ENDPROC(ret_from_kernel_thread) + /*============================================================================= * SWI handler *----------------------------------------------------------------------------- @@ -671,28 +668,12 @@ __cr_alignment: #endif .ltorg -ENTRY(sys_execve) - add r3, sp, #S_OFF - b __sys_execve -ENDPROC(sys_execve) - -ENTRY(sys_clone) - add ip, sp, #S_OFF - stw ip, [sp+], #4 - b __sys_clone -ENDPROC(sys_clone) - ENTRY(sys_rt_sigreturn) add r0, sp, #S_OFF mov why, #0 @ prevent syscall restart handling b __sys_rt_sigreturn ENDPROC(sys_rt_sigreturn) -ENTRY(sys_sigaltstack) - ldw r2, [sp+], #S_OFF + S_SP - b do_sigaltstack -ENDPROC(sys_sigaltstack) - __INIT /* diff --git a/arch/unicore32/kernel/head.S b/arch/unicore32/kernel/head.S index 8caf322e110..e8f0b98c02e 100644 --- a/arch/unicore32/kernel/head.S +++ b/arch/unicore32/kernel/head.S @@ -17,7 +17,7 @@ #include <generated/asm-offsets.h> #include <asm/memory.h> #include <asm/thread_info.h> -#include <asm/system.h> +#include <asm/hwdef-copro.h> #include <asm/pgtable-hwdef.h> #if (PHYS_OFFSET & 0x003fffff) diff --git a/arch/unicore32/kernel/hibernate.c b/arch/unicore32/kernel/hibernate.c index 7d0f0b7983a..d75ef8b6cb5 100644 --- a/arch/unicore32/kernel/hibernate.c +++ b/arch/unicore32/kernel/hibernate.c @@ -15,7 +15,6 @@ #include <linux/suspend.h> #include <linux/bootmem.h> -#include <asm/system.h> #include <asm/page.h> #include <asm/pgtable.h> #include <asm/pgalloc.h> diff --git a/arch/unicore32/kernel/init_task.c b/arch/unicore32/kernel/init_task.c deleted file mode 100644 index a35a1e50e4f..00000000000 --- a/arch/unicore32/kernel/init_task.c +++ /dev/null @@ -1,44 +0,0 @@ -/* - * linux/arch/unicore32/kernel/init_task.c - * - * Code specific to PKUnity SoC and UniCore ISA - * - * Copyright (C) 2001-2010 GUAN Xue-tao - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - */ -#include <linux/mm.h> -#include <linux/module.h> -#include <linux/fs.h> -#include <linux/sched.h> -#include <linux/init.h> -#include <linux/init_task.h> -#include <linux/mqueue.h> -#include <linux/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 8192-byte aligned due to the - * way process stacks are handled. This is done by making sure - * the linker maps this in the .text segment right after head.S, - * and making head.S ensure the proper alignment. - * - * The things we do for performance.. - */ -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/unicore32/kernel/irq.c b/arch/unicore32/kernel/irq.c index 2aa30a364bb..0be5ccd7ccd 100644 --- a/arch/unicore32/kernel/irq.c +++ b/arch/unicore32/kernel/irq.c @@ -23,10 +23,9 @@ #include <linux/list.h> #include <linux/kallsyms.h> #include <linux/proc_fs.h> -#include <linux/sysdev.h> +#include <linux/syscore_ops.h> #include <linux/gpio.h> -#include <asm/system.h> #include <mach/hardware.h> #include "setup.h" @@ -237,7 +236,7 @@ static struct puv3_irq_state { unsigned int iccr; } puv3_irq_state; -static int puv3_irq_suspend(struct sys_device *dev, pm_message_t state) +static int puv3_irq_suspend(void) { struct puv3_irq_state *st = &puv3_irq_state; @@ -265,7 +264,7 @@ static int puv3_irq_suspend(struct sys_device *dev, pm_message_t state) return 0; } -static int puv3_irq_resume(struct sys_device *dev) +static void puv3_irq_resume(void) { struct puv3_irq_state *st = &puv3_irq_state; @@ -278,27 +277,20 @@ static int puv3_irq_resume(struct sys_device *dev) writel(st->icmr, INTC_ICMR); } - return 0; } -static struct sysdev_class puv3_irq_sysclass = { - .name = "pkunity-irq", +static struct syscore_ops puv3_irq_syscore_ops = { .suspend = puv3_irq_suspend, .resume = puv3_irq_resume, }; -static struct sys_device puv3_irq_device = { - .id = 0, - .cls = &puv3_irq_sysclass, -}; - -static int __init puv3_irq_init_devicefs(void) +static int __init puv3_irq_init_syscore(void) { - sysdev_class_register(&puv3_irq_sysclass); - return sysdev_register(&puv3_irq_device); + register_syscore_ops(&puv3_irq_syscore_ops); + return 0; } -device_initcall(puv3_irq_init_devicefs); +device_initcall(puv3_irq_init_syscore); void __init init_IRQ(void) { diff --git a/arch/unicore32/kernel/ksyms.c b/arch/unicore32/kernel/ksyms.c index a8970809428..0323528a80f 100644 --- a/arch/unicore32/kernel/ksyms.c +++ b/arch/unicore32/kernel/ksyms.c @@ -20,45 +20,18 @@ #include <linux/io.h> #include <asm/checksum.h> -#include <asm/system.h> #include "ksyms.h" -EXPORT_SYMBOL(__uc32_find_next_zero_bit); -EXPORT_SYMBOL(__uc32_find_next_bit); - -EXPORT_SYMBOL(__backtrace); +EXPORT_SYMBOL(find_first_bit); +EXPORT_SYMBOL(find_first_zero_bit); +EXPORT_SYMBOL(find_next_zero_bit); +EXPORT_SYMBOL(find_next_bit); /* platform dependent support */ EXPORT_SYMBOL(__udelay); EXPORT_SYMBOL(__const_udelay); - /* networking */ -EXPORT_SYMBOL(csum_partial); -EXPORT_SYMBOL(csum_partial_copy_from_user); -EXPORT_SYMBOL(csum_partial_copy_nocheck); -EXPORT_SYMBOL(__csum_ipv6_magic); - - /* io */ -#ifndef __raw_readsb -EXPORT_SYMBOL(__raw_readsb); -#endif -#ifndef __raw_readsw -EXPORT_SYMBOL(__raw_readsw); -#endif -#ifndef __raw_readsl -EXPORT_SYMBOL(__raw_readsl); -#endif -#ifndef __raw_writesb -EXPORT_SYMBOL(__raw_writesb); -#endif -#ifndef __raw_writesw -EXPORT_SYMBOL(__raw_writesw); -#endif -#ifndef __raw_writesl -EXPORT_SYMBOL(__raw_writesl); -#endif - /* string / mem functions */ EXPORT_SYMBOL(strchr); EXPORT_SYMBOL(strrchr); @@ -77,23 +50,12 @@ EXPORT_SYMBOL(__copy_from_user); EXPORT_SYMBOL(__copy_to_user); EXPORT_SYMBOL(__clear_user); -EXPORT_SYMBOL(__get_user_1); -EXPORT_SYMBOL(__get_user_2); -EXPORT_SYMBOL(__get_user_4); - -EXPORT_SYMBOL(__put_user_1); -EXPORT_SYMBOL(__put_user_2); -EXPORT_SYMBOL(__put_user_4); -EXPORT_SYMBOL(__put_user_8); - EXPORT_SYMBOL(__ashldi3); EXPORT_SYMBOL(__ashrdi3); EXPORT_SYMBOL(__divsi3); EXPORT_SYMBOL(__lshrdi3); EXPORT_SYMBOL(__modsi3); -EXPORT_SYMBOL(__muldi3); EXPORT_SYMBOL(__ucmpdi2); EXPORT_SYMBOL(__udivsi3); EXPORT_SYMBOL(__umodsi3); -EXPORT_SYMBOL(__bswapsi2); diff --git a/arch/unicore32/kernel/ksyms.h b/arch/unicore32/kernel/ksyms.h index 185cdc712d0..31472ad9467 100644 --- a/arch/unicore32/kernel/ksyms.h +++ b/arch/unicore32/kernel/ksyms.h @@ -8,8 +8,6 @@ extern void __ashrdi3(void); extern void __divsi3(void); extern void __lshrdi3(void); extern void __modsi3(void); -extern void __muldi3(void); extern void __ucmpdi2(void); extern void __udivsi3(void); extern void __umodsi3(void); -extern void __bswapsi2(void); diff --git a/arch/unicore32/kernel/module.c b/arch/unicore32/kernel/module.c index 3e5a38d71a1..dc41f6dfedb 100644 --- a/arch/unicore32/kernel/module.c +++ b/arch/unicore32/kernel/module.c @@ -24,30 +24,9 @@ void *module_alloc(unsigned long size) { - struct vm_struct *area; - - size = PAGE_ALIGN(size); - if (!size) - return NULL; - - area = __get_vm_area(size, VM_ALLOC, MODULES_VADDR, MODULES_END); - if (!area) - return NULL; - - return __vmalloc_area(area, GFP_KERNEL, PAGE_KERNEL_EXEC); -} - -void module_free(struct module *module, void *region) -{ - vfree(region); -} - -int module_frob_arch_sections(Elf_Ehdr *hdr, - Elf_Shdr *sechdrs, - char *secstrings, - struct module *mod) -{ - return 0; + return __vmalloc_node_range(size, 1, MODULES_VADDR, MODULES_END, + GFP_KERNEL, PAGE_KERNEL_EXEC, NUMA_NO_NODE, + __builtin_return_address(0)); } int @@ -128,25 +107,3 @@ apply_relocate(Elf32_Shdr *sechdrs, const char *strtab, unsigned int symindex, } return 0; } - -int -apply_relocate_add(Elf32_Shdr *sechdrs, const char *strtab, - unsigned int symindex, unsigned int relsec, - struct module *module) -{ - printk(KERN_ERR "module %s: ADD RELOCATION unsupported\n", - module->name); - return -ENOEXEC; -} - -int -module_finalize(const Elf32_Ehdr *hdr, const Elf_Shdr *sechdrs, - struct module *module) -{ - return 0; -} - -void -module_arch_cleanup(struct module *mod) -{ -} diff --git a/arch/unicore32/kernel/pci.c b/arch/unicore32/kernel/pci.c index 100eab842e6..374a055a8e6 100644 --- a/arch/unicore32/kernel/pci.c +++ b/arch/unicore32/kernel/pci.c @@ -21,7 +21,6 @@ #include <linux/io.h> static int debug_pci; -static int use_firmware; #define CONFIG_CMD(bus, devfn, where) \ (0x80000000 | (bus->number << 16) | (devfn << 8) | (where & ~3)) @@ -102,7 +101,7 @@ void pci_puv3_preinit(void) writel(readl(PCIBRI_CMD) | PCIBRI_CMD_IO | PCIBRI_CMD_MEM, PCIBRI_CMD); } -static int __init pci_puv3_map_irq(struct pci_dev *dev, u8 slot, u8 pin) +static int __init pci_puv3_map_irq(const struct pci_dev *dev, u8 slot, u8 pin) { if (dev->bus->number == 0) { #ifdef CONFIG_ARCH_FPGA /* 4 pci slots */ @@ -155,14 +154,6 @@ void __init puv3_pci_adjust_zones(unsigned long *zone_size, zhole_size[0] = 0; } -void __devinit pcibios_update_irq(struct pci_dev *dev, int irq) -{ - if (debug_pci) - printk(KERN_DEBUG "PCI: Assigning IRQ %02d to %s\n", - irq, pci_name(dev)); - pci_write_config_byte(dev, PCI_INTERRUPT_LINE, irq); -} - /* * If the bus contains any of these devices, then we must not turn on * parity checking of any kind. @@ -176,7 +167,7 @@ static inline int pdev_bad_for_parity(struct pci_dev *dev) * pcibios_fixup_bus - 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; u16 features = PCI_COMMAND_SERR @@ -259,9 +250,7 @@ void __devinit pcibios_fixup_bus(struct pci_bus *bus) printk(KERN_INFO "PCI: bus%d: Fast back to back transfers %sabled\n", bus->number, (features & PCI_COMMAND_FAST_BACK) ? "en" : "dis"); } -#ifdef CONFIG_HOTPLUG EXPORT_SYMBOL(pcibios_fixup_bus); -#endif static int __init pci_common_init(void) { @@ -276,7 +265,7 @@ static int __init pci_common_init(void) pci_fixup_irqs(pci_common_swizzle, pci_puv3_map_irq); - if (!use_firmware) { + if (!pci_has_flag(PCI_PROBE_ONLY)) { /* * Size the bridge windows. */ @@ -288,27 +277,27 @@ static int __init pci_common_init(void) pci_bus_assign_resources(puv3_bus); } - /* - * Tell drivers about devices found. - */ - pci_bus_add_devices(puv3_bus); - return 0; } subsys_initcall(pci_common_init); -char * __devinit pcibios_setup(char *str) +char * __init pcibios_setup(char *str) { if (!strcmp(str, "debug")) { debug_pci = 1; return NULL; } else if (!strcmp(str, "firmware")) { - use_firmware = 1; + pci_add_flags(PCI_PROBE_ONLY); return NULL; } return str; } +void pcibios_set_master(struct pci_dev *dev) +{ + /* No special bus mastering setup handling */ +} + /* * From arch/i386/kernel/pci-i386.c: * diff --git a/arch/unicore32/kernel/process.c b/arch/unicore32/kernel/process.c index ba401df971e..b008e996146 100644 --- a/arch/unicore32/kernel/process.c +++ b/arch/unicore32/kernel/process.c @@ -34,7 +34,6 @@ #include <asm/cacheflush.h> #include <asm/processor.h> -#include <asm/system.h> #include <asm/stacktrace.h> #include "setup.h" @@ -46,40 +45,12 @@ static const char * const processor_modes[] = { "UK18", "UK19", "UK1A", "EXTN", "UK1C", "UK1D", "UK1E", "SUSR" }; -/* - * The idle thread, has rather strange semantics for calling pm_idle, - * but this is what x86 does and we need to do the same, so that - * things like cpuidle get called in the same way. - */ -void cpu_idle(void) +void arch_cpu_idle(void) { - /* endless idle loop with no priority at all */ - while (1) { - tick_nohz_stop_sched_tick(1); - while (!need_resched()) { - local_irq_disable(); - stop_critical_timings(); - cpu_do_idle(); - local_irq_enable(); - start_critical_timings(); - } - tick_nohz_restart_sched_tick(); - preempt_enable_no_resched(); - schedule(); - preempt_disable(); - } + cpu_do_idle(); + local_irq_enable(); } -static char reboot_mode = 'h'; - -int __init reboot_setup(char *str) -{ - reboot_mode = str[0]; - return 1; -} - -__setup("reboot=", reboot_setup); - void machine_halt(void) { gpio_set_value(GPO_SOFT_OFF, 0); @@ -89,6 +60,7 @@ void machine_halt(void) * Function pointers to optional machine specific functions */ void (*pm_power_off)(void) = NULL; +EXPORT_SYMBOL(pm_power_off); void machine_power_off(void) { @@ -107,7 +79,7 @@ void machine_restart(char *cmd) * we may need it to insert some 1:1 mappings so that * soft boot works. */ - setup_mm_for_reboot(reboot_mode); + setup_mm_for_reboot(); /* Clean and invalidate caches */ flush_cache_all(); @@ -121,7 +93,7 @@ void machine_restart(char *cmd) /* * Now handle reboot code. */ - if (reboot_mode == 's') { + if (reboot_mode == REBOOT_SOFT) { /* Jump into ROM at address 0xffff0000 */ cpu_reset(VECTORS_BASE); } else { @@ -163,11 +135,7 @@ void __show_regs(struct pt_regs *regs) unsigned long flags; char buf[64]; - printk(KERN_DEFAULT "CPU: %d %s (%s %.*s)\n", - raw_smp_processor_id(), print_tainted(), - init_utsname()->release, - (int)strcspn(init_utsname()->version, " "), - init_utsname()->version); + show_regs_print_info(KERN_DEFAULT); print_symbol("PC is at %s\n", instruction_pointer(regs)); print_symbol("LR is at %s\n", regs->UCreg_lr); printk(KERN_DEFAULT "pc : [<%08lx>] lr : [<%08lx>] psr: %08lx\n" @@ -257,25 +225,32 @@ void release_thread(struct task_struct *dead_task) } asmlinkage void ret_from_fork(void) __asm__("ret_from_fork"); +asmlinkage void ret_from_kernel_thread(void) __asm__("ret_from_kernel_thread"); int copy_thread(unsigned long clone_flags, unsigned long stack_start, - unsigned long stk_sz, struct task_struct *p, struct pt_regs *regs) + unsigned long stk_sz, struct task_struct *p) { struct thread_info *thread = task_thread_info(p); struct pt_regs *childregs = task_pt_regs(p); - *childregs = *regs; - childregs->UCreg_00 = 0; - childregs->UCreg_sp = stack_start; - memset(&thread->cpu_context, 0, sizeof(struct cpu_context_save)); thread->cpu_context.sp = (unsigned long)childregs; - thread->cpu_context.pc = (unsigned long)ret_from_fork; - - if (clone_flags & CLONE_SETTLS) - childregs->UCreg_16 = regs->UCreg_03; - + if (unlikely(p->flags & PF_KTHREAD)) { + thread->cpu_context.pc = (unsigned long)ret_from_kernel_thread; + thread->cpu_context.r4 = stack_start; + thread->cpu_context.r5 = stk_sz; + memset(childregs, 0, sizeof(struct pt_regs)); + } else { + thread->cpu_context.pc = (unsigned long)ret_from_fork; + *childregs = *current_pt_regs(); + childregs->UCreg_00 = 0; + if (stack_start) + childregs->UCreg_sp = stack_start; + + if (clone_flags & CLONE_SETTLS) + childregs->UCreg_16 = childregs->UCreg_03; + } return 0; } @@ -304,42 +279,6 @@ int dump_fpu(struct pt_regs *regs, elf_fpregset_t *fp) } EXPORT_SYMBOL(dump_fpu); -/* - * Shuffle the argument into the correct register before calling the - * thread function. r1 is the thread argument, r2 is the pointer to - * the thread function, and r3 points to the exit function. - */ -asm(".pushsection .text\n" -" .align\n" -" .type kernel_thread_helper, #function\n" -"kernel_thread_helper:\n" -" mov.a asr, r7\n" -" mov r0, r4\n" -" mov lr, r6\n" -" mov pc, r5\n" -" .size kernel_thread_helper, . - kernel_thread_helper\n" -" .popsection"); - -/* - * Create a kernel thread. - */ -pid_t kernel_thread(int (*fn)(void *), void *arg, unsigned long flags) -{ - struct pt_regs regs; - - memset(®s, 0, sizeof(regs)); - - regs.UCreg_04 = (unsigned long)arg; - regs.UCreg_05 = (unsigned long)fn; - regs.UCreg_06 = (unsigned long)do_exit; - regs.UCreg_07 = PRIV_MODE; - regs.UCreg_pc = (unsigned long)kernel_thread_helper; - regs.UCreg_asr = regs.UCreg_07 | PSR_I_BIT; - - return do_fork(flags|CLONE_VM|CLONE_UNTRACED, 0, ®s, 0, NULL, NULL); -} -EXPORT_SYMBOL(kernel_thread); - unsigned long get_wchan(struct task_struct *p) { struct stackframe frame; @@ -379,7 +318,7 @@ int vectors_user_mapping(void) return install_special_mapping(mm, 0xffff0000, PAGE_SIZE, VM_READ | VM_EXEC | VM_MAYREAD | VM_MAYEXEC | - VM_ALWAYSDUMP | VM_RESERVED, + VM_DONTEXPAND | VM_DONTDUMP, NULL); } diff --git a/arch/unicore32/kernel/puv3-core.c b/arch/unicore32/kernel/puv3-core.c index 1a505a78776..254adeecc61 100644 --- a/arch/unicore32/kernel/puv3-core.c +++ b/arch/unicore32/kernel/puv3-core.c @@ -13,7 +13,6 @@ #include <linux/init.h> #include <linux/device.h> -#include <linux/sysdev.h> #include <linux/amba/bus.h> #include <linux/platform_device.h> #include <linux/io.h> diff --git a/arch/unicore32/kernel/puv3-nb0916.c b/arch/unicore32/kernel/puv3-nb0916.c index e731c561ed4..0c6618e7189 100644 --- a/arch/unicore32/kernel/puv3-nb0916.c +++ b/arch/unicore32/kernel/puv3-nb0916.c @@ -13,7 +13,6 @@ #include <linux/init.h> #include <linux/device.h> -#include <linux/sysdev.h> #include <linux/platform_device.h> #include <linux/mtd/physmap.h> #include <linux/io.h> @@ -55,6 +54,7 @@ static struct platform_pwm_backlight_data nb0916_backlight_data = { .max_brightness = 100, .dft_brightness = 100, .pwm_period_ns = 70 * 1024, + .enable_gpio = -1, }; static struct gpio_keys_button nb0916_gpio_keys[] = { @@ -124,7 +124,7 @@ int __init mach_nb0916_init(void) if (request_irq(gpio_to_irq(GPI_LCD_CASE_OFF), &nb0916_lcdcaseoff_handler, - IRQF_DISABLED | IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING, + IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING, "NB0916 lcd case off", NULL) < 0) { printk(KERN_DEBUG "LCD-Case-OFF IRQ %d not available\n", @@ -132,7 +132,7 @@ int __init mach_nb0916_init(void) } if (request_irq(gpio_to_irq(GPI_OTP_INT), &nb0916_overheat_handler, - IRQF_DISABLED | IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING, + IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING, "NB0916 overheating protection", NULL) < 0) { printk(KERN_DEBUG "Overheating Protection IRQ %d not available\n", diff --git a/arch/unicore32/kernel/pwm.c b/arch/unicore32/kernel/pwm.c deleted file mode 100644 index 4615d51e3ba..00000000000 --- a/arch/unicore32/kernel/pwm.c +++ /dev/null @@ -1,263 +0,0 @@ -/* - * linux/arch/unicore32/kernel/pwm.c - * - * Code specific to PKUnity SoC and UniCore ISA - * - * Maintained by GUAN Xue-tao <gxt@mprc.pku.edu.cn> - * Copyright (C) 2001-2010 Guan Xuetao - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - */ - -#include <linux/module.h> -#include <linux/kernel.h> -#include <linux/platform_device.h> -#include <linux/slab.h> -#include <linux/err.h> -#include <linux/clk.h> -#include <linux/io.h> -#include <linux/pwm.h> - -#include <asm/div64.h> -#include <mach/hardware.h> - -struct pwm_device { - struct list_head node; - struct platform_device *pdev; - - const char *label; - struct clk *clk; - int clk_enabled; - - unsigned int use_count; - unsigned int pwm_id; -}; - -/* - * period_ns = 10^9 * (PRESCALE + 1) * (PV + 1) / PWM_CLK_RATE - * duty_ns = 10^9 * (PRESCALE + 1) * DC / PWM_CLK_RATE - */ -int pwm_config(struct pwm_device *pwm, int duty_ns, int period_ns) -{ - unsigned long long c; - unsigned long period_cycles, prescale, pv, dc; - - if (pwm == NULL || period_ns == 0 || duty_ns > period_ns) - return -EINVAL; - - c = clk_get_rate(pwm->clk); - c = c * period_ns; - do_div(c, 1000000000); - period_cycles = c; - - if (period_cycles < 1) - period_cycles = 1; - prescale = (period_cycles - 1) / 1024; - pv = period_cycles / (prescale + 1) - 1; - - if (prescale > 63) - return -EINVAL; - - if (duty_ns == period_ns) - dc = OST_PWMDCCR_FDCYCLE; - else - dc = (pv + 1) * duty_ns / period_ns; - - /* NOTE: the clock to PWM has to be enabled first - * before writing to the registers - */ - clk_enable(pwm->clk); - OST_PWMPWCR = prescale; - OST_PWMDCCR = pv - dc; - OST_PWMPCR = pv; - clk_disable(pwm->clk); - - return 0; -} -EXPORT_SYMBOL(pwm_config); - -int pwm_enable(struct pwm_device *pwm) -{ - int rc = 0; - - if (!pwm->clk_enabled) { - rc = clk_enable(pwm->clk); - if (!rc) - pwm->clk_enabled = 1; - } - return rc; -} -EXPORT_SYMBOL(pwm_enable); - -void pwm_disable(struct pwm_device *pwm) -{ - if (pwm->clk_enabled) { - clk_disable(pwm->clk); - pwm->clk_enabled = 0; - } -} -EXPORT_SYMBOL(pwm_disable); - -static DEFINE_MUTEX(pwm_lock); -static LIST_HEAD(pwm_list); - -struct pwm_device *pwm_request(int pwm_id, const char *label) -{ - struct pwm_device *pwm; - int found = 0; - - mutex_lock(&pwm_lock); - - list_for_each_entry(pwm, &pwm_list, node) { - if (pwm->pwm_id == pwm_id) { - found = 1; - break; - } - } - - if (found) { - if (pwm->use_count == 0) { - pwm->use_count++; - pwm->label = label; - } else - pwm = ERR_PTR(-EBUSY); - } else - pwm = ERR_PTR(-ENOENT); - - mutex_unlock(&pwm_lock); - return pwm; -} -EXPORT_SYMBOL(pwm_request); - -void pwm_free(struct pwm_device *pwm) -{ - mutex_lock(&pwm_lock); - - if (pwm->use_count) { - pwm->use_count--; - pwm->label = NULL; - } else - pr_warning("PWM device already freed\n"); - - mutex_unlock(&pwm_lock); -} -EXPORT_SYMBOL(pwm_free); - -static inline void __add_pwm(struct pwm_device *pwm) -{ - mutex_lock(&pwm_lock); - list_add_tail(&pwm->node, &pwm_list); - mutex_unlock(&pwm_lock); -} - -static struct pwm_device *pwm_probe(struct platform_device *pdev, - unsigned int pwm_id, struct pwm_device *parent_pwm) -{ - struct pwm_device *pwm; - struct resource *r; - int ret = 0; - - pwm = kzalloc(sizeof(struct pwm_device), GFP_KERNEL); - if (pwm == NULL) { - dev_err(&pdev->dev, "failed to allocate memory\n"); - return ERR_PTR(-ENOMEM); - } - - pwm->clk = clk_get(NULL, "OST_CLK"); - if (IS_ERR(pwm->clk)) { - ret = PTR_ERR(pwm->clk); - goto err_free; - } - pwm->clk_enabled = 0; - - pwm->use_count = 0; - pwm->pwm_id = pwm_id; - pwm->pdev = pdev; - - r = platform_get_resource(pdev, IORESOURCE_MEM, 0); - if (r == NULL) { - dev_err(&pdev->dev, "no memory resource defined\n"); - ret = -ENODEV; - goto err_free_clk; - } - - r = request_mem_region(r->start, resource_size(r), pdev->name); - if (r == NULL) { - dev_err(&pdev->dev, "failed to request memory resource\n"); - ret = -EBUSY; - goto err_free_clk; - } - - __add_pwm(pwm); - platform_set_drvdata(pdev, pwm); - return pwm; - -err_free_clk: - clk_put(pwm->clk); -err_free: - kfree(pwm); - return ERR_PTR(ret); -} - -static int __devinit puv3_pwm_probe(struct platform_device *pdev) -{ - struct pwm_device *pwm = pwm_probe(pdev, pdev->id, NULL); - - if (IS_ERR(pwm)) - return PTR_ERR(pwm); - - return 0; -} - -static int __devexit pwm_remove(struct platform_device *pdev) -{ - struct pwm_device *pwm; - struct resource *r; - - pwm = platform_get_drvdata(pdev); - if (pwm == NULL) - return -ENODEV; - - mutex_lock(&pwm_lock); - list_del(&pwm->node); - mutex_unlock(&pwm_lock); - - r = platform_get_resource(pdev, IORESOURCE_MEM, 0); - release_mem_region(r->start, resource_size(r)); - - clk_put(pwm->clk); - kfree(pwm); - return 0; -} - -static struct platform_driver puv3_pwm_driver = { - .driver = { - .name = "PKUnity-v3-PWM", - }, - .probe = puv3_pwm_probe, - .remove = __devexit_p(pwm_remove), -}; - -static int __init pwm_init(void) -{ - int ret = 0; - - ret = platform_driver_register(&puv3_pwm_driver); - if (ret) { - printk(KERN_ERR "failed to register puv3_pwm_driver\n"); - return ret; - } - - return ret; -} -arch_initcall(pwm_init); - -static void __exit pwm_exit(void) -{ - platform_driver_unregister(&puv3_pwm_driver); -} -module_exit(pwm_exit); - -MODULE_LICENSE("GPL v2"); diff --git a/arch/unicore32/kernel/rtc.c b/arch/unicore32/kernel/rtc.c deleted file mode 100644 index 8cad70b3302..00000000000 --- a/arch/unicore32/kernel/rtc.c +++ /dev/null @@ -1,371 +0,0 @@ -/* - * linux/arch/unicore32/kernel/rtc.c - * - * Code specific to PKUnity SoC and UniCore ISA - * - * Maintained by GUAN Xue-tao <gxt@mprc.pku.edu.cn> - * Copyright (C) 2001-2010 Guan Xuetao - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - */ - -#include <linux/module.h> -#include <linux/fs.h> -#include <linux/string.h> -#include <linux/init.h> -#include <linux/platform_device.h> -#include <linux/interrupt.h> -#include <linux/rtc.h> -#include <linux/bcd.h> -#include <linux/clk.h> -#include <linux/log2.h> -#include <linux/slab.h> -#include <linux/uaccess.h> -#include <linux/io.h> - -#include <asm/irq.h> -#include <mach/hardware.h> - -static struct resource *puv3_rtc_mem; - -static int puv3_rtc_alarmno = IRQ_RTCAlarm; -static int puv3_rtc_tickno = IRQ_RTC; - -static DEFINE_SPINLOCK(puv3_rtc_pie_lock); - -/* IRQ Handlers */ - -static irqreturn_t puv3_rtc_alarmirq(int irq, void *id) -{ - struct rtc_device *rdev = id; - - writel(readl(RTC_RTSR) | RTC_RTSR_AL, RTC_RTSR); - rtc_update_irq(rdev, 1, RTC_AF | RTC_IRQF); - return IRQ_HANDLED; -} - -static irqreturn_t puv3_rtc_tickirq(int irq, void *id) -{ - struct rtc_device *rdev = id; - - writel(readl(RTC_RTSR) | RTC_RTSR_HZ, RTC_RTSR); - rtc_update_irq(rdev, 1, RTC_PF | RTC_IRQF); - return IRQ_HANDLED; -} - -/* Update control registers */ -static void puv3_rtc_setaie(int to) -{ - unsigned int tmp; - - pr_debug("%s: aie=%d\n", __func__, to); - - tmp = readl(RTC_RTSR) & ~RTC_RTSR_ALE; - - if (to) - tmp |= RTC_RTSR_ALE; - - writel(tmp, RTC_RTSR); -} - -static int puv3_rtc_setpie(struct device *dev, int enabled) -{ - unsigned int tmp; - - pr_debug("%s: pie=%d\n", __func__, enabled); - - spin_lock_irq(&puv3_rtc_pie_lock); - tmp = readl(RTC_RTSR) & ~RTC_RTSR_HZE; - - if (enabled) - tmp |= RTC_RTSR_HZE; - - writel(tmp, RTC_RTSR); - spin_unlock_irq(&puv3_rtc_pie_lock); - - return 0; -} - -/* Time read/write */ - -static int puv3_rtc_gettime(struct device *dev, struct rtc_time *rtc_tm) -{ - rtc_time_to_tm(readl(RTC_RCNR), rtc_tm); - - pr_debug("read time %02x.%02x.%02x %02x/%02x/%02x\n", - rtc_tm->tm_year, rtc_tm->tm_mon, rtc_tm->tm_mday, - rtc_tm->tm_hour, rtc_tm->tm_min, rtc_tm->tm_sec); - - return 0; -} - -static int puv3_rtc_settime(struct device *dev, struct rtc_time *tm) -{ - unsigned long rtc_count = 0; - - pr_debug("set time %02d.%02d.%02d %02d/%02d/%02d\n", - tm->tm_year, tm->tm_mon, tm->tm_mday, - tm->tm_hour, tm->tm_min, tm->tm_sec); - - rtc_tm_to_time(tm, &rtc_count); - writel(rtc_count, RTC_RCNR); - - return 0; -} - -static int puv3_rtc_getalarm(struct device *dev, struct rtc_wkalrm *alrm) -{ - struct rtc_time *alm_tm = &alrm->time; - - rtc_time_to_tm(readl(RTC_RTAR), alm_tm); - - alrm->enabled = readl(RTC_RTSR) & RTC_RTSR_ALE; - - pr_debug("read alarm %02x %02x.%02x.%02x %02x/%02x/%02x\n", - alrm->enabled, - alm_tm->tm_year, alm_tm->tm_mon, alm_tm->tm_mday, - alm_tm->tm_hour, alm_tm->tm_min, alm_tm->tm_sec); - - return 0; -} - -static int puv3_rtc_setalarm(struct device *dev, struct rtc_wkalrm *alrm) -{ - struct rtc_time *tm = &alrm->time; - unsigned long rtcalarm_count = 0; - - pr_debug("puv3_rtc_setalarm: %d, %02x/%02x/%02x %02x.%02x.%02x\n", - alrm->enabled, - tm->tm_mday & 0xff, tm->tm_mon & 0xff, tm->tm_year & 0xff, - tm->tm_hour & 0xff, tm->tm_min & 0xff, tm->tm_sec); - - rtc_tm_to_time(tm, &rtcalarm_count); - writel(rtcalarm_count, RTC_RTAR); - - puv3_rtc_setaie(alrm->enabled); - - if (alrm->enabled) - enable_irq_wake(puv3_rtc_alarmno); - else - disable_irq_wake(puv3_rtc_alarmno); - - return 0; -} - -static int puv3_rtc_proc(struct device *dev, struct seq_file *seq) -{ - seq_printf(seq, "periodic_IRQ\t: %s\n", - (readl(RTC_RTSR) & RTC_RTSR_HZE) ? "yes" : "no"); - return 0; -} - -static int puv3_rtc_open(struct device *dev) -{ - struct platform_device *pdev = to_platform_device(dev); - struct rtc_device *rtc_dev = platform_get_drvdata(pdev); - int ret; - - ret = request_irq(puv3_rtc_alarmno, puv3_rtc_alarmirq, - IRQF_DISABLED, "pkunity-rtc alarm", rtc_dev); - - if (ret) { - dev_err(dev, "IRQ%d error %d\n", puv3_rtc_alarmno, ret); - return ret; - } - - ret = request_irq(puv3_rtc_tickno, puv3_rtc_tickirq, - IRQF_DISABLED, "pkunity-rtc tick", rtc_dev); - - if (ret) { - dev_err(dev, "IRQ%d error %d\n", puv3_rtc_tickno, ret); - goto tick_err; - } - - return ret; - - tick_err: - free_irq(puv3_rtc_alarmno, rtc_dev); - return ret; -} - -static void puv3_rtc_release(struct device *dev) -{ - struct platform_device *pdev = to_platform_device(dev); - struct rtc_device *rtc_dev = platform_get_drvdata(pdev); - - /* do not clear AIE here, it may be needed for wake */ - - puv3_rtc_setpie(dev, 0); - free_irq(puv3_rtc_alarmno, rtc_dev); - free_irq(puv3_rtc_tickno, rtc_dev); -} - -static const struct rtc_class_ops puv3_rtcops = { - .open = puv3_rtc_open, - .release = puv3_rtc_release, - .read_time = puv3_rtc_gettime, - .set_time = puv3_rtc_settime, - .read_alarm = puv3_rtc_getalarm, - .set_alarm = puv3_rtc_setalarm, - .proc = puv3_rtc_proc, -}; - -static void puv3_rtc_enable(struct platform_device *pdev, int en) -{ - if (!en) { - writel(readl(RTC_RTSR) & ~RTC_RTSR_HZE, RTC_RTSR); - } else { - /* re-enable the device, and check it is ok */ - - if ((readl(RTC_RTSR) & RTC_RTSR_HZE) == 0) { - dev_info(&pdev->dev, "rtc disabled, re-enabling\n"); - writel(readl(RTC_RTSR) | RTC_RTSR_HZE, RTC_RTSR); - } - } -} - -static int puv3_rtc_remove(struct platform_device *dev) -{ - struct rtc_device *rtc = platform_get_drvdata(dev); - - platform_set_drvdata(dev, NULL); - rtc_device_unregister(rtc); - - puv3_rtc_setpie(&dev->dev, 0); - puv3_rtc_setaie(0); - - release_resource(puv3_rtc_mem); - kfree(puv3_rtc_mem); - - return 0; -} - -static int puv3_rtc_probe(struct platform_device *pdev) -{ - struct rtc_device *rtc; - struct resource *res; - int ret; - - pr_debug("%s: probe=%p\n", __func__, pdev); - - /* find the IRQs */ - - puv3_rtc_tickno = platform_get_irq(pdev, 1); - if (puv3_rtc_tickno < 0) { - dev_err(&pdev->dev, "no irq for rtc tick\n"); - return -ENOENT; - } - - puv3_rtc_alarmno = platform_get_irq(pdev, 0); - if (puv3_rtc_alarmno < 0) { - dev_err(&pdev->dev, "no irq for alarm\n"); - return -ENOENT; - } - - pr_debug("PKUnity_rtc: tick irq %d, alarm irq %d\n", - puv3_rtc_tickno, puv3_rtc_alarmno); - - /* get the memory region */ - - res = platform_get_resource(pdev, IORESOURCE_MEM, 0); - if (res == NULL) { - dev_err(&pdev->dev, "failed to get memory region resource\n"); - return -ENOENT; - } - - puv3_rtc_mem = request_mem_region(res->start, - res->end-res->start+1, - pdev->name); - - if (puv3_rtc_mem == NULL) { - dev_err(&pdev->dev, "failed to reserve memory region\n"); - ret = -ENOENT; - goto err_nores; - } - - puv3_rtc_enable(pdev, 1); - - /* register RTC and exit */ - - rtc = rtc_device_register("pkunity", &pdev->dev, &puv3_rtcops, - THIS_MODULE); - - if (IS_ERR(rtc)) { - dev_err(&pdev->dev, "cannot attach rtc\n"); - ret = PTR_ERR(rtc); - goto err_nortc; - } - - /* platform setup code should have handled this; sigh */ - if (!device_can_wakeup(&pdev->dev)) - device_init_wakeup(&pdev->dev, 1); - - platform_set_drvdata(pdev, rtc); - return 0; - - err_nortc: - puv3_rtc_enable(pdev, 0); - release_resource(puv3_rtc_mem); - - err_nores: - return ret; -} - -#ifdef CONFIG_PM - -/* RTC Power management control */ - -static int ticnt_save; - -static int puv3_rtc_suspend(struct platform_device *pdev, pm_message_t state) -{ - /* save RTAR for anyone using periodic interrupts */ - ticnt_save = readl(RTC_RTAR); - puv3_rtc_enable(pdev, 0); - return 0; -} - -static int puv3_rtc_resume(struct platform_device *pdev) -{ - puv3_rtc_enable(pdev, 1); - writel(ticnt_save, RTC_RTAR); - return 0; -} -#else -#define puv3_rtc_suspend NULL -#define puv3_rtc_resume NULL -#endif - -static struct platform_driver puv3_rtcdrv = { - .probe = puv3_rtc_probe, - .remove = __devexit_p(puv3_rtc_remove), - .suspend = puv3_rtc_suspend, - .resume = puv3_rtc_resume, - .driver = { - .name = "PKUnity-v3-RTC", - .owner = THIS_MODULE, - } -}; - -static char __initdata banner[] = "PKUnity-v3 RTC, (c) 2009 PKUnity Co.\n"; - -static int __init puv3_rtc_init(void) -{ - printk(banner); - return platform_driver_register(&puv3_rtcdrv); -} - -static void __exit puv3_rtc_exit(void) -{ - platform_driver_unregister(&puv3_rtcdrv); -} - -module_init(puv3_rtc_init); -module_exit(puv3_rtc_exit); - -MODULE_DESCRIPTION("RTC Driver for the PKUnity v3 chip"); -MODULE_AUTHOR("Hu Dongliang"); -MODULE_LICENSE("GPL v2"); - diff --git a/arch/unicore32/kernel/setup.c b/arch/unicore32/kernel/setup.c index 471b6bca8da..3fa317f9612 100644 --- a/arch/unicore32/kernel/setup.c +++ b/arch/unicore32/kernel/setup.c @@ -37,6 +37,7 @@ #include <asm/cacheflush.h> #include <asm/tlbflush.h> #include <asm/traps.h> +#include <asm/memblock.h> #include "setup.h" @@ -52,6 +53,10 @@ struct stack { static struct stack stacks[NR_CPUS]; +#ifdef CONFIG_VGA_CONSOLE +struct screen_info screen_info; +#endif + char elf_platform[ELF_PLATFORM_SIZE]; EXPORT_SYMBOL(elf_platform); @@ -64,7 +69,7 @@ static char default_command_line[COMMAND_LINE_SIZE] __initdata = CONFIG_CMDLINE; */ static struct resource mem_res[] = { { - .name = "Kernel text", + .name = "Kernel code", .start = 0, .end = 0, .flags = IORESOURCE_MEM diff --git a/arch/unicore32/kernel/setup.h b/arch/unicore32/kernel/setup.h index dcd1306eb5c..f5c51b85ad2 100644 --- a/arch/unicore32/kernel/setup.h +++ b/arch/unicore32/kernel/setup.h @@ -12,14 +12,17 @@ #ifndef __UNICORE_KERNEL_SETUP_H__ #define __UNICORE_KERNEL_SETUP_H__ +#include <asm/hwdef-copro.h> + extern void paging_init(void); extern void puv3_core_init(void); +extern void cpu_init(void); extern void puv3_ps2_init(void); extern void pci_puv3_preinit(void); extern void __init puv3_init_gpio(void); -extern void setup_mm_for_reboot(char mode); +extern void setup_mm_for_reboot(void); extern char __stubs_start[], __stubs_end[]; extern char __vectors_start[], __vectors_end[]; @@ -27,4 +30,10 @@ extern char __vectors_start[], __vectors_end[]; extern void kernel_thread_helper(void); extern void __init early_signal_init(void); + +extern asmlinkage void __backtrace(void); +extern asmlinkage void c_backtrace(unsigned long fp, int pmode); + +extern void __show_regs(struct pt_regs *); + #endif diff --git a/arch/unicore32/kernel/signal.c b/arch/unicore32/kernel/signal.c index b163fca5678..6905f0ebdc7 100644 --- a/arch/unicore32/kernel/signal.c +++ b/arch/unicore32/kernel/signal.c @@ -12,7 +12,6 @@ #include <linux/errno.h> #include <linux/signal.h> #include <linux/personality.h> -#include <linux/freezer.h> #include <linux/uaccess.h> #include <linux/tracehook.h> #include <linux/elf.h> @@ -21,8 +20,6 @@ #include <asm/cacheflush.h> #include <asm/ucontext.h> -#define _BLOCKABLE (~(sigmask(SIGKILL) | sigmask(SIGSTOP))) - /* * For UniCore syscalls, we encode the syscall number into the instruction. */ @@ -61,13 +58,8 @@ static int restore_sigframe(struct pt_regs *regs, struct sigframe __user *sf) int err; err = __copy_from_user(&set, &sf->uc.uc_sigmask, sizeof(set)); - if (err == 0) { - sigdelsetmask(&set, ~_BLOCKABLE); - spin_lock_irq(¤t->sighand->siglock); - current->blocked = set; - recalc_sigpending(); - spin_unlock_irq(¤t->sighand->siglock); - } + if (err == 0) + set_current_blocked(&set); err |= __get_user(regs->UCreg_00, &sf->uc.uc_mcontext.regs.UCreg_00); err |= __get_user(regs->UCreg_01, &sf->uc.uc_mcontext.regs.UCreg_01); @@ -131,8 +123,7 @@ asmlinkage int __sys_rt_sigreturn(struct pt_regs *regs) if (restore_sigframe(regs, &frame->sig)) goto badframe; - if (do_sigaltstack(&frame->sig.uc.uc_stack, NULL, regs->UCreg_sp) - == -EFAULT) + if (restore_altstack(&frame->sig.uc.uc_stack)) goto badframe; return regs->UCreg_00; @@ -273,7 +264,6 @@ static int setup_rt_frame(int usig, struct k_sigaction *ka, siginfo_t *info, { struct rt_sigframe __user *frame = get_sigframe(ka, regs, sizeof(*frame)); - stack_t stack; int err = 0; if (!frame) @@ -283,13 +273,7 @@ static int setup_rt_frame(int usig, struct k_sigaction *ka, siginfo_t *info, err |= __put_user(0, &frame->sig.uc.uc_flags); err |= __put_user(NULL, &frame->sig.uc.uc_link); - - memset(&stack, 0, sizeof(stack)); - stack.ss_sp = (void __user *)current->sas_ss_sp; - stack.ss_flags = sas_ss_flags(regs->UCreg_sp); - stack.ss_size = current->sas_ss_size; - err |= __copy_to_user(&frame->sig.uc.uc_stack, &stack, sizeof(stack)); - + err |= __save_altstack(&frame->sig.uc.uc_stack, regs->UCreg_sp); err |= setup_sigframe(&frame->sig, regs, set); if (err == 0) err |= setup_return(regs, ka, frame->sig.retcode, frame, usig); @@ -315,12 +299,12 @@ static inline void setup_syscall_restart(struct pt_regs *regs) /* * OK, we're invoking a handler */ -static int handle_signal(unsigned long sig, struct k_sigaction *ka, - siginfo_t *info, sigset_t *oldset, - struct pt_regs *regs, int syscall) +static void handle_signal(unsigned long sig, struct k_sigaction *ka, + siginfo_t *info, struct pt_regs *regs, int syscall) { struct thread_info *thread = current_thread_info(); struct task_struct *tsk = current; + sigset_t *oldset = sigmask_to_save(); int usig = sig; int ret; @@ -366,21 +350,10 @@ static int handle_signal(unsigned long sig, struct k_sigaction *ka, if (ret != 0) { force_sigsegv(sig, tsk); - return ret; + return; } - /* - * Block the signal if we were successful. - */ - spin_lock_irq(&tsk->sighand->siglock); - sigorsets(&tsk->blocked, &tsk->blocked, - &ka->sa.sa_mask); - if (!(ka->sa.sa_flags & SA_NODEFER)) - sigaddset(&tsk->blocked, sig); - recalc_sigpending(); - spin_unlock_irq(&tsk->sighand->siglock); - - return 0; + signal_delivered(sig, info, ka, regs, 0); } /* @@ -407,32 +380,12 @@ static void do_signal(struct pt_regs *regs, int syscall) if (!user_mode(regs)) return; - if (try_to_freeze()) - goto no_signal; - signr = get_signal_to_deliver(&info, &ka, regs, NULL); if (signr > 0) { - sigset_t *oldset; - - if (test_thread_flag(TIF_RESTORE_SIGMASK)) - oldset = ¤t->saved_sigmask; - else - oldset = ¤t->blocked; - if (handle_signal(signr, &ka, &info, oldset, regs, syscall) - == 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); - } + handle_signal(signr, &ka, &info, regs, syscall); return; } - no_signal: /* * No signal to deliver to the process - restart the syscall. */ @@ -455,15 +408,11 @@ static void do_signal(struct pt_regs *regs, int syscall) regs->UCreg_00 == -ERESTARTNOINTR) { setup_syscall_restart(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); - } } + /* If there's no signal to deliver, we just put the saved + * sigmask back. + */ + restore_saved_sigmask(); } asmlinkage void do_notify_resume(struct pt_regs *regs, @@ -475,8 +424,6 @@ asmlinkage void do_notify_resume(struct pt_regs *regs, if (thread_flags & _TIF_NOTIFY_RESUME) { clear_thread_flag(TIF_NOTIFY_RESUME); tracehook_notify_resume(regs); - if (current->replacement_session_keyring) - key_replace_session_keyring(); } } diff --git a/arch/unicore32/kernel/sys.c b/arch/unicore32/kernel/sys.c index 3afe60a39ac..f9e86253931 100644 --- a/arch/unicore32/kernel/sys.c +++ b/arch/unicore32/kernel/sys.c @@ -28,97 +28,11 @@ #include <asm/syscalls.h> #include <asm/cacheflush.h> -/* Clone a task - this clones the calling program thread. - * This is called indirectly via a small wrapper - */ -asmlinkage long __sys_clone(unsigned long clone_flags, unsigned long newsp, - void __user *parent_tid, void __user *child_tid, - struct pt_regs *regs) -{ - if (!newsp) - newsp = regs->UCreg_sp; - - return do_fork(clone_flags, newsp, regs, 0, - parent_tid, child_tid); -} - -/* sys_execve() executes a new program. - * This is called indirectly via a small wrapper - */ -asmlinkage long __sys_execve(const char __user *filename, - const char __user *const __user *argv, - const char __user *const __user *envp, - struct pt_regs *regs) -{ - int error; - char *fn; - - fn = getname(filename); - error = PTR_ERR(fn); - if (IS_ERR(fn)) - goto out; - error = do_execve(fn, argv, envp, regs); - putname(fn); -out: - return error; -} - -int kernel_execve(const char *filename, - const char *const argv[], - const char *const envp[]) -{ - struct pt_regs regs; - int ret; - - memset(®s, 0, sizeof(struct pt_regs)); - ret = do_execve(filename, - (const char __user *const __user *)argv, - (const char __user *const __user *)envp, ®s); - if (ret < 0) - goto out; - - /* - * Save argc to the register structure for userspace. - */ - regs.UCreg_00 = ret; - - /* - * We were successful. We won't be returning to our caller, but - * instead to user space by manipulating the kernel stack. - */ - asm("add r0, %0, %1\n\t" - "mov r1, %2\n\t" - "mov r2, %3\n\t" - "mov r22, #0\n\t" /* not a syscall */ - "mov r23, %0\n\t" /* thread structure */ - "b.l memmove\n\t" /* copy regs to top of stack */ - "mov sp, r0\n\t" /* reposition stack pointer */ - "b ret_to_user" - : - : "r" (current_thread_info()), - "Ir" (THREAD_START_SP - sizeof(regs)), - "r" (®s), - "Ir" (sizeof(regs)) - : "r0", "r1", "r2", "r3", "ip", "lr", "memory"); - - out: - return ret; -} -EXPORT_SYMBOL(kernel_execve); - -/* Note: used by the compat code even in 64-bit Linux. */ -SYSCALL_DEFINE6(mmap2, unsigned long, addr, unsigned long, len, - unsigned long, prot, unsigned long, flags, - unsigned long, fd, unsigned long, off_4k) -{ - return sys_mmap_pgoff(addr, len, prot, flags, fd, - off_4k); -} - /* Provide the actual syscall number to call mapping. */ #undef __SYSCALL #define __SYSCALL(nr, call) [nr] = (call), +#define sys_mmap2 sys_mmap_pgoff /* Note that we don't include <linux/unistd.h> but <asm/unistd.h> */ void *sys_call_table[__NR_syscalls] = { [0 ... __NR_syscalls-1] = sys_ni_syscall, diff --git a/arch/unicore32/kernel/time.c b/arch/unicore32/kernel/time.c index 080710c0924..d3824b2ff64 100644 --- a/arch/unicore32/kernel/time.c +++ b/arch/unicore32/kernel/time.c @@ -86,7 +86,7 @@ static struct clocksource cksrc_puv3_oscr = { static struct irqaction puv3_timer_irq = { .name = "ost0", - .flags = IRQF_DISABLED | IRQF_TIMER | IRQF_IRQPOLL, + .flags = IRQF_TIMER | IRQF_IRQPOLL, .handler = puv3_ost0_interrupt, .dev_id = &ckevt_puv3_osmr0, }; diff --git a/arch/unicore32/kernel/traps.c b/arch/unicore32/kernel/traps.c index 254e36fa951..c54e32410ea 100644 --- a/arch/unicore32/kernel/traps.c +++ b/arch/unicore32/kernel/traps.c @@ -26,7 +26,6 @@ #include <linux/unistd.h> #include <asm/cacheflush.h> -#include <asm/system.h> #include <asm/traps.h> #include "setup.h" @@ -171,12 +170,6 @@ static void dump_backtrace(struct pt_regs *regs, struct task_struct *tsk) c_backtrace(fp, mode); } -void dump_stack(void) -{ - dump_backtrace(NULL, NULL); -} -EXPORT_SYMBOL(dump_stack); - void show_stack(struct task_struct *tsk, unsigned long *sp) { dump_backtrace(NULL, tsk); @@ -192,7 +185,6 @@ static int __die(const char *str, int err, struct thread_info *thread, printk(KERN_EMERG "Internal error: %s: %x [#%d]\n", str, err, ++die_counter); - sysfs_printk_last_file(); /* trap and error numbers are mostly meaningless on UniCore */ ret = notify_die(DIE_OOPS, str, regs, err, tsk->thread.trap_no, \ @@ -233,7 +225,7 @@ void die(const char *str, struct pt_regs *regs, int err) ret = __die(str, err, thread, regs); bust_spinlocks(0); - add_taint(TAINT_DIE); + add_taint(TAINT_DIE, LOCKDEP_NOW_UNRELIABLE); spin_unlock_irq(&die_lock); oops_exit(); diff --git a/arch/unicore32/kernel/vmlinux.lds.S b/arch/unicore32/kernel/vmlinux.lds.S index 9bf7f7af52c..77e407e49a6 100644 --- a/arch/unicore32/kernel/vmlinux.lds.S +++ b/arch/unicore32/kernel/vmlinux.lds.S @@ -30,7 +30,7 @@ SECTIONS HEAD_TEXT_SECTION INIT_TEXT_SECTION(PAGE_SIZE) INIT_DATA_SECTION(16) - PERCPU(L1_CACHE_BYTES, PAGE_SIZE) + PERCPU_SECTION(L1_CACHE_BYTES) __init_end = .; _stext = .; diff --git a/arch/unicore32/lib/findbit.S b/arch/unicore32/lib/findbit.S index c360ce905d8..c77746247d3 100644 --- a/arch/unicore32/lib/findbit.S +++ b/arch/unicore32/lib/findbit.S @@ -17,7 +17,7 @@ * Purpose : Find a 'zero' bit * Prototype: int find_first_zero_bit(void *addr, unsigned int maxbit); */ -__uc32_find_first_zero_bit: +ENTRY(find_first_zero_bit) cxor.a r1, #0 beq 3f mov r2, #0 @@ -29,13 +29,14 @@ __uc32_find_first_zero_bit: bub 1b 3: mov r0, r1 @ no free bits mov pc, lr +ENDPROC(find_first_zero_bit) /* * Purpose : Find next 'zero' bit * Prototype: int find_next_zero_bit * (void *addr, unsigned int maxbit, int offset) */ -ENTRY(__uc32_find_next_zero_bit) +ENTRY(find_next_zero_bit) cxor.a r1, #0 beq 3b and.a ip, r2, #7 @@ -47,14 +48,14 @@ ENTRY(__uc32_find_next_zero_bit) or r2, r2, #7 @ if zero, then no bits here add r2, r2, #1 @ align bit pointer b 2b @ loop for next bit -ENDPROC(__uc32_find_next_zero_bit) +ENDPROC(find_next_zero_bit) /* * Purpose : Find a 'one' bit * Prototype: int find_first_bit * (const unsigned long *addr, unsigned int maxbit); */ -__uc32_find_first_bit: +ENTRY(find_first_bit) cxor.a r1, #0 beq 3f mov r2, #0 @@ -66,13 +67,14 @@ __uc32_find_first_bit: bub 1b 3: mov r0, r1 @ no free bits mov pc, lr +ENDPROC(find_first_bit) /* * Purpose : Find next 'one' bit * Prototype: int find_next_zero_bit * (void *addr, unsigned int maxbit, int offset) */ -ENTRY(__uc32_find_next_bit) +ENTRY(find_next_bit) cxor.a r1, #0 beq 3b and.a ip, r2, #7 @@ -83,7 +85,7 @@ ENTRY(__uc32_find_next_bit) or r2, r2, #7 @ if zero, then no bits here add r2, r2, #1 @ align bit pointer b 2b @ loop for next bit -ENDPROC(__uc32_find_next_bit) +ENDPROC(find_next_bit) /* * One or more bits in the LSB of r3 are assumed to be set. diff --git a/arch/unicore32/mm/alignment.c b/arch/unicore32/mm/alignment.c index 28f576d733e..24e836023e6 100644 --- a/arch/unicore32/mm/alignment.c +++ b/arch/unicore32/mm/alignment.c @@ -21,9 +21,12 @@ #include <linux/sched.h> #include <linux/uaccess.h> +#include <asm/pgtable.h> #include <asm/tlbflush.h> #include <asm/unaligned.h> +#include "mm.h" + #define CODING_BITS(i) (i & 0xe0000120) #define LDST_P_BIT(i) (i & (1 << 28)) /* Preindex */ diff --git a/arch/unicore32/mm/dma-swiotlb.c b/arch/unicore32/mm/dma-swiotlb.c index bfa9fbb2bbb..16c08b2143a 100644 --- a/arch/unicore32/mm/dma-swiotlb.c +++ b/arch/unicore32/mm/dma-swiotlb.c @@ -17,9 +17,23 @@ #include <asm/dma.h> +static void *unicore_swiotlb_alloc_coherent(struct device *dev, size_t size, + dma_addr_t *dma_handle, gfp_t flags, + struct dma_attrs *attrs) +{ + return swiotlb_alloc_coherent(dev, size, dma_handle, flags); +} + +static void unicore_swiotlb_free_coherent(struct device *dev, size_t size, + void *vaddr, dma_addr_t dma_addr, + struct dma_attrs *attrs) +{ + swiotlb_free_coherent(dev, size, vaddr, dma_addr); +} + struct dma_map_ops swiotlb_dma_map_ops = { - .alloc_coherent = swiotlb_alloc_coherent, - .free_coherent = swiotlb_free_coherent, + .alloc = unicore_swiotlb_alloc_coherent, + .free = unicore_swiotlb_free_coherent, .map_sg = swiotlb_map_sg_attrs, .unmap_sg = swiotlb_unmap_sg_attrs, .dma_supported = swiotlb_dma_supported, diff --git a/arch/unicore32/mm/fault.c b/arch/unicore32/mm/fault.c index 283aa4b50b7..0dc922dba91 100644 --- a/arch/unicore32/mm/fault.c +++ b/arch/unicore32/mm/fault.c @@ -20,7 +20,6 @@ #include <linux/sched.h> #include <linux/io.h> -#include <asm/system.h> #include <asm/pgtable.h> #include <asm/tlbflush.h> @@ -169,7 +168,7 @@ static inline bool access_error(unsigned int fsr, struct vm_area_struct *vma) } static int __do_pf(struct mm_struct *mm, unsigned long addr, unsigned int fsr, - struct task_struct *tsk) + unsigned int flags, struct task_struct *tsk) { struct vm_area_struct *vma; int fault; @@ -195,14 +194,7 @@ good_area: * If for any reason at all we couldn't handle the fault, make * sure we exit gracefully rather than endlessly redo the fault. */ - fault = handle_mm_fault(mm, vma, addr & PAGE_MASK, - (!(fsr ^ 0x12)) ? FAULT_FLAG_WRITE : 0); - if (unlikely(fault & VM_FAULT_ERROR)) - return fault; - if (fault & VM_FAULT_MAJOR) - tsk->maj_flt++; - else - tsk->min_flt++; + fault = handle_mm_fault(mm, vma, addr & PAGE_MASK, flags); return fault; check_stack: @@ -217,6 +209,7 @@ static int do_pf(unsigned long addr, unsigned int fsr, struct pt_regs *regs) struct task_struct *tsk; struct mm_struct *mm; int fault, sig, code; + unsigned int flags = FAULT_FLAG_ALLOW_RETRY | FAULT_FLAG_KILLABLE; tsk = current; mm = tsk->mm; @@ -228,6 +221,11 @@ static int do_pf(unsigned long addr, unsigned int fsr, struct pt_regs *regs) if (in_atomic() || !mm) goto no_context; + if (user_mode(regs)) + flags |= FAULT_FLAG_USER; + if (!(fsr ^ 0x12)) + flags |= FAULT_FLAG_WRITE; + /* * As per x86, we may deadlock here. However, since the kernel only * validly references user space from well defined areas of the code, @@ -237,6 +235,7 @@ static int do_pf(unsigned long addr, unsigned int fsr, struct pt_regs *regs) if (!user_mode(regs) && !search_exception_tables(regs->UCreg_pc)) goto no_context; +retry: down_read(&mm->mmap_sem); } else { /* @@ -252,7 +251,28 @@ static int do_pf(unsigned long addr, unsigned int fsr, struct pt_regs *regs) #endif } - fault = __do_pf(mm, addr, fsr, tsk); + fault = __do_pf(mm, addr, fsr, flags, tsk); + + /* If we need to retry but a fatal signal is pending, handle the + * signal first. We do not need to release the mmap_sem because + * it would already be released in __lock_page_or_retry in + * mm/filemap.c. */ + if ((fault & VM_FAULT_RETRY) && fatal_signal_pending(current)) + return 0; + + if (!(fault & VM_FAULT_ERROR) && (flags & FAULT_FLAG_ALLOW_RETRY)) { + if (fault & VM_FAULT_MAJOR) + tsk->maj_flt++; + else + tsk->min_flt++; + if (fault & VM_FAULT_RETRY) { + /* Clear FAULT_FLAG_ALLOW_RETRY to avoid any risk + * of starvation. */ + flags &= ~FAULT_FLAG_ALLOW_RETRY; + goto retry; + } + } + up_read(&mm->mmap_sem); /* @@ -262,6 +282,13 @@ static int do_pf(unsigned long addr, unsigned int fsr, struct pt_regs *regs) (VM_FAULT_ERROR | VM_FAULT_BADMAP | VM_FAULT_BADACCESS)))) return 0; + /* + * If we are in kernel mode at this point, we + * have no context to handle this fault with. + */ + if (!user_mode(regs)) + goto no_context; + if (fault & VM_FAULT_OOM) { /* * We ran out of memory, call the OOM killer, and return to @@ -272,13 +299,6 @@ static int do_pf(unsigned long addr, unsigned int fsr, struct pt_regs *regs) return 0; } - /* - * If we are in kernel mode at this point, we - * have no context to handle this fault with. - */ - if (!user_mode(regs)) - goto no_context; - if (fault & VM_FAULT_SIGBUS) { /* * We had some memory, but were unable to diff --git a/arch/unicore32/mm/flush.c b/arch/unicore32/mm/flush.c index 93478cc8b26..6d4c096ffa2 100644 --- a/arch/unicore32/mm/flush.c +++ b/arch/unicore32/mm/flush.c @@ -14,7 +14,6 @@ #include <linux/pagemap.h> #include <asm/cacheflush.h> -#include <asm/system.h> #include <asm/tlbflush.h> void flush_cache_mm(struct mm_struct *mm) diff --git a/arch/unicore32/mm/init.c b/arch/unicore32/mm/init.c index 1fc02633f70..be2bde9b07c 100644 --- a/arch/unicore32/mm/init.c +++ b/arch/unicore32/mm/init.c @@ -20,11 +20,13 @@ #include <linux/memblock.h> #include <linux/sort.h> #include <linux/dma-mapping.h> +#include <linux/export.h> #include <asm/sections.h> #include <asm/setup.h> #include <asm/sizes.h> #include <asm/tlb.h> +#include <asm/memblock.h> #include <mach/map.h> #include "mm.h" @@ -62,7 +64,7 @@ void show_mem(unsigned int filter) struct meminfo *mi = &meminfo; printk(KERN_DEFAULT "Mem-info:\n"); - show_free_areas(); + show_free_areas(filter); for_each_bank(i, mi) { struct membank *bank = &mi->bank[i]; @@ -244,7 +246,6 @@ void __init uc32_memblock_init(struct meminfo *mi) sort(&meminfo.bank, meminfo.nr_banks, sizeof(meminfo.bank[0]), meminfo_cmp, NULL); - memblock_init(); for (i = 0; i < mi->nr_banks; i++) memblock_add(mi->bank[i].start, mi->bank[i].size); @@ -263,7 +264,7 @@ void __init uc32_memblock_init(struct meminfo *mi) uc32_mm_memblock_reserve(); - memblock_analyze(); + memblock_allow_resize(); memblock_dump_all(); } @@ -312,24 +313,6 @@ void __init bootmem_init(void) max_pfn = max_high - PHYS_PFN_OFFSET; } -static inline int free_area(unsigned long pfn, unsigned long end, char *s) -{ - unsigned int pages = 0, size = (end - pfn) << (PAGE_SHIFT - 10); - - for (; pfn < end; pfn++) { - struct page *page = pfn_to_page(pfn); - ClearPageReserved(page); - init_page_count(page); - __free_page(page); - pages++; - } - - if (size && s) - printk(KERN_INFO "Freeing %s memory: %dK\n", s, size); - - return pages; -} - static inline void free_memmap(unsigned long start_pfn, unsigned long end_pfn) { @@ -397,59 +380,14 @@ static void __init free_unused_memmap(struct meminfo *mi) */ void __init mem_init(void) { - unsigned long reserved_pages, free_pages; - struct memblock_region *reg; - int i; - max_mapnr = pfn_to_page(max_pfn + PHYS_PFN_OFFSET) - mem_map; - /* this will put all unused low memory onto the freelists */ free_unused_memmap(&meminfo); - totalram_pages += free_all_bootmem(); - - reserved_pages = free_pages = 0; - - for_each_bank(i, &meminfo) { - struct membank *bank = &meminfo.bank[i]; - unsigned int pfn1, pfn2; - struct page *page, *end; - - pfn1 = bank_pfn_start(bank); - pfn2 = bank_pfn_end(bank); - - page = pfn_to_page(pfn1); - end = pfn_to_page(pfn2 - 1) + 1; - - do { - if (PageReserved(page)) - reserved_pages++; - else if (!page_count(page)) - free_pages++; - page++; - } while (page < end); - } - - /* - * Since our memory may not be contiguous, calculate the - * real number of pages we have in this system - */ - printk(KERN_INFO "Memory:"); - num_physpages = 0; - for_each_memblock(memory, reg) { - unsigned long pages = memblock_region_memory_end_pfn(reg) - - memblock_region_memory_base_pfn(reg); - num_physpages += pages; - printk(" %ldMB", pages >> (20 - PAGE_SHIFT)); - } - printk(" = %luMB total\n", num_physpages >> (20 - PAGE_SHIFT)); - - printk(KERN_NOTICE "Memory: %luk/%luk available, %luk reserved, %luK highmem\n", - nr_free_pages() << (PAGE_SHIFT-10), - free_pages << (PAGE_SHIFT-10), - reserved_pages << (PAGE_SHIFT-10), - totalhigh_pages << (PAGE_SHIFT-10)); + /* this will put all unused low memory onto the freelists */ + free_all_bootmem(); + mem_init_print_info(NULL); printk(KERN_NOTICE "Virtual kernel memory layout:\n" " vector : 0x%08lx - 0x%08lx (%4ld kB)\n" " vmalloc : 0x%08lx - 0x%08lx (%4ld MB)\n" @@ -478,7 +416,7 @@ void __init mem_init(void) BUILD_BUG_ON(TASK_SIZE > MODULES_VADDR); BUG_ON(TASK_SIZE > MODULES_VADDR); - if (PAGE_SIZE >= 16384 && num_physpages <= 128) { + if (PAGE_SIZE >= 16384 && get_num_physpages() <= 128) { /* * On a machine this small we won't get * anywhere without overcommit, so turn @@ -490,9 +428,7 @@ void __init mem_init(void) void free_initmem(void) { - totalram_pages += free_area(__phys_to_pfn(__pa(__init_begin)), - __phys_to_pfn(__pa(__init_end)), - "init"); + free_initmem_default(-1); } #ifdef CONFIG_BLK_DEV_INITRD @@ -502,9 +438,7 @@ static int keep_initrd; void free_initrd_mem(unsigned long start, unsigned long end) { if (!keep_initrd) - totalram_pages += free_area(__phys_to_pfn(__pa(start)), - __phys_to_pfn(__pa(end)), - "initrd"); + free_reserved_area((void *)start, (void *)end, -1, "initrd"); } static int __init keepinitrd_setup(char *__unused) diff --git a/arch/unicore32/mm/ioremap.c b/arch/unicore32/mm/ioremap.c index b7a605597b0..bf012b2b71a 100644 --- a/arch/unicore32/mm/ioremap.c +++ b/arch/unicore32/mm/ioremap.c @@ -144,11 +144,11 @@ void __iomem *__uc32_ioremap_pfn_caller(unsigned long pfn, * Don't allow RAM to be mapped */ if (pfn_valid(pfn)) { - printk(KERN_WARNING "BUG: Your driver calls ioremap() on\n" + WARN(1, "BUG: Your driver calls ioremap() on\n" "system memory. This leads to architecturally\n" "unpredictable behaviour, and ioremap() will fail in\n" "the next kernel release. Please fix your driver.\n"); - WARN_ON(1); + return NULL; } type = get_mem_type(mtype); @@ -235,7 +235,7 @@ EXPORT_SYMBOL(__uc32_ioremap_cached); void __uc32_iounmap(volatile void __iomem *io_addr) { void *addr = (void *)(PAGE_MASK & (unsigned long)io_addr); - struct vm_struct **p, *tmp; + struct vm_struct *vm; /* * If this is a section based mapping we need to handle it @@ -244,17 +244,10 @@ void __uc32_iounmap(volatile void __iomem *io_addr) * all the mappings before the area can be reclaimed * by someone else. */ - write_lock(&vmlist_lock); - for (p = &vmlist ; (tmp = *p) ; p = &tmp->next) { - if ((tmp->flags & VM_IOREMAP) && (tmp->addr == addr)) { - if (tmp->flags & VM_UNICORE_SECTION_MAPPING) { - unmap_area_sections((unsigned long)tmp->addr, - tmp->size); - } - break; - } - } - write_unlock(&vmlist_lock); + vm = find_vm_area(addr); + if (vm && (vm->flags & VM_IOREMAP) && + (vm->flags & VM_UNICORE_SECTION_MAPPING)) + unmap_area_sections((unsigned long)vm->addr, vm->size); vunmap(addr); } diff --git a/arch/unicore32/mm/mm.h b/arch/unicore32/mm/mm.h index 3296bca0f1f..05c7f532eee 100644 --- a/arch/unicore32/mm/mm.h +++ b/arch/unicore32/mm/mm.h @@ -9,6 +9,8 @@ * it under the terms of the GNU General Public License version 2 as * published by the Free Software Foundation. */ +#include <asm/hwdef-copro.h> + /* the upper-most page table pointer */ extern pmd_t *top_pmd; extern int sysctl_overcommit_memory; @@ -34,6 +36,9 @@ struct mem_type { const struct mem_type *get_mem_type(unsigned int type); extern void __flush_dcache_page(struct address_space *, struct page *); +extern void hook_fault_code(int nr, int (*fn) + (unsigned long, unsigned int, struct pt_regs *), + int sig, int code, const char *name); void __init bootmem_init(void); void uc32_mm_memblock_reserve(void); diff --git a/arch/unicore32/mm/mmu.c b/arch/unicore32/mm/mmu.c index db2d334941b..4f5a532bee1 100644 --- a/arch/unicore32/mm/mmu.c +++ b/arch/unicore32/mm/mmu.c @@ -25,13 +25,12 @@ #include <asm/setup.h> #include <asm/sizes.h> #include <asm/tlb.h> +#include <asm/memblock.h> #include <mach/map.h> #include "mm.h" -DEFINE_PER_CPU(struct mmu_gather, mmu_gathers); - /* * empty_zero_page is a special page that is used for * zero-initialized data and COW. @@ -446,7 +445,7 @@ void __init paging_init(void) * the user-mode pages. This will then ensure that we have predictable * results when turning the mmu off */ -void setup_mm_for_reboot(char mode) +void setup_mm_for_reboot(void) { unsigned long base_pmdval; pgd_t *pgd; diff --git a/arch/unicore32/mm/proc-syms.c b/arch/unicore32/mm/proc-syms.c index f30071e3665..21c00fc85c9 100644 --- a/arch/unicore32/mm/proc-syms.c +++ b/arch/unicore32/mm/proc-syms.c @@ -19,5 +19,7 @@ EXPORT_SYMBOL(cpu_dcache_clean_area); EXPORT_SYMBOL(cpu_set_pte); +EXPORT_SYMBOL(__cpuc_coherent_kern_range); + EXPORT_SYMBOL(__cpuc_dma_flush_range); EXPORT_SYMBOL(__cpuc_dma_clean_range); |