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Merge branch 'for-linus' of git://ftp.arm.linux.org.uk/~rmk/linux-arm

Browse Source 
Pull ARM updates from Russell King:
 "In this set, we have:
   - Refactoring of some of the old StrongARM-1100 GPIO code to make
     things simpler by Dmitry Eremin-Solenikov
   - Read-only and non-executable support for modules on ARM from Laura
     Abbot
   - Removal of unnecessary set_drvdata() calls in AMBA code
   - Some non-executable support for kernel lowmem mappings at the 1MB
     section granularity, and dumping of kernel page tables via debugfs
   - Some improvements for the timer/clock code on Footbridge platforms,
     and cleanup some of the LED code there
   - Fix fls/ffs() signatures to match x86 to prevent build warnings,
     particularly where these are used with min/max() macros
   - Avoid using the bootmem allocator on ARM (patches from Santosh
     Shilimkar)
   - Various asid/unaligned access updates from Will Deacon"

* 'for-linus' of git://ftp.arm.linux.org.uk/~rmk/linux-arm: (51 commits)
  ARM: SMP implementations are not supposed to return from smp_ops.cpu_die()
  ARM: ignore memory below PHYS_OFFSET
  Fix select-induced Kconfig warning for ZBOOT_ROM
  ARM: fix ffs/fls implementations to match x86
  ARM: 7935/1: sa1100: collie: add gpio-keys configuration
  ARM: 7932/1: bcm: Add DEBUG_LL console support
  ARM: 7929/1: Remove duplicate SCHED_HRTICK config option
  ARM: 7928/1: kconfig: select HAVE_EFFICIENT_UNALIGNED_ACCESS for CPUv6+ && MMU
  ARM: 7927/1: dcache: select DCACHE_WORD_ACCESS for big-endian CPUs
  ARM: 7926/1: mm: flesh out and fix the comments in the ASID allocator
  ARM: 7925/1: mm: keep track of last ASID allocation to improve bitmap searching
  ARM: 7924/1: mm: don't bother with reserved ttbr0 when running with LPAE
  ARM: PCI: add legacy IDE IRQ implementation
  ARM: footbridge: cleanup LEDs code
  ARM: pgd allocation: retry on failure
  ARM: footbridge: add one-shot mode for DC21285 timer
  ARM: footbridge: add sched_clock implementation
  ARM: 7922/1: l2x0: add Marvell Tauros3 support
  ARM: 7877/1: use built-in byte swap function
  ARM: 7921/1: mcpm: remove redundant dsb instructions prior to sev
  ...
This commit is contained in:
Linus Torvalds 2014-01-23 18:34:03 -08:00
commit f341535193
55 changed files with 1179 additions and 524 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

23
Documentation/devicetree/bindings/arm/l2cc.txt
View File

@ -7,20 +7,21 @@ The ARM L2 cache representation in the device tree should be done as follows:
Required properties:
- compatible : should be one of:
"arm,pl310-cache"
"arm,l220-cache"
"arm,l210-cache"
"marvell,aurora-system-cache": Marvell Controller designed to be
"arm,pl310-cache"
"arm,l220-cache"
"arm,l210-cache"
"bcm,bcm11351-a2-pl310-cache": DEPRECATED by "brcm,bcm11351-a2-pl310-cache"
"brcm,bcm11351-a2-pl310-cache": For Broadcom bcm11351 chipset where an
offset needs to be added to the address before passing down to the L2
cache controller
"marvell,aurora-system-cache": Marvell Controller designed to be
compatible with the ARM one, with system cache mode (meaning
maintenance operations on L1 are broadcasted to the L2 and L2
performs the same operation).
"marvell,"aurora-outer-cache: Marvell Controller designed to be
compatible with the ARM one with outer cache mode.
"brcm,bcm11351-a2-pl310-cache": For Broadcom bcm11351 chipset where an
offset needs to be added to the address before passing down to the L2
cache controller
"bcm,bcm11351-a2-pl310-cache": DEPRECATED by
"brcm,bcm11351-a2-pl310-cache"
"marvell,aurora-outer-cache": Marvell Controller designed to be
compatible with the ARM one with outer cache mode.
"marvell,tauros3-cache": Marvell Tauros3 cache controller, compatible
with arm,pl310-cache controller.
- cache-unified : Specifies the cache is a unified cache.
- cache-level : Should be set to 2 for a level 2 cache.
- reg : Physical base address and size of cache controller's memory mapped

14
arch/arm/Kconfig
View File

@ -6,12 +6,13 @@ config ARM
select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST
select ARCH_HAVE_CUSTOM_GPIO_H
select ARCH_MIGHT_HAVE_PC_PARPORT
select ARCH_USE_BUILTIN_BSWAP
select ARCH_USE_CMPXCHG_LOCKREF
select ARCH_WANT_IPC_PARSE_VERSION
select BUILDTIME_EXTABLE_SORT if MMU
select CLONE_BACKWARDS
select CPU_PM if (SUSPEND || CPU_IDLE)
select DCACHE_WORD_ACCESS if (CPU_V6 || CPU_V6K || CPU_V7) && !CPU_BIG_ENDIAN && MMU
select DCACHE_WORD_ACCESS if HAVE_EFFICIENT_UNALIGNED_ACCESS
select GENERIC_ATOMIC64 if (CPU_V7M || CPU_V6 || !CPU_32v6K || !AEABI)
select GENERIC_CLOCKEVENTS_BROADCAST if SMP
select GENERIC_IDLE_POLL_SETUP
@ -36,6 +37,7 @@ config ARM
select HAVE_DMA_ATTRS
select HAVE_DMA_CONTIGUOUS if MMU
select HAVE_DYNAMIC_FTRACE if (!XIP_KERNEL)
select HAVE_EFFICIENT_UNALIGNED_ACCESS if (CPU_V6 || CPU_V6K || CPU_V7) && MMU
select HAVE_FTRACE_MCOUNT_RECORD if (!XIP_KERNEL)
select HAVE_FUNCTION_GRAPH_TRACER if (!THUMB2_KERNEL)
select HAVE_FUNCTION_TRACER if (!XIP_KERNEL)
@ -63,6 +65,7 @@ config ARM
select IRQ_FORCED_THREADING
select KTIME_SCALAR
select MODULES_USE_ELF_REL
select NO_BOOTMEM
select OLD_SIGACTION
select OLD_SIGSUSPEND3
select PERF_USE_VMALLOC
@ -1651,9 +1654,6 @@ config HZ
config SCHED_HRTICK
def_bool HIGH_RES_TIMERS
config SCHED_HRTICK
def_bool HIGH_RES_TIMERS
config THUMB2_KERNEL
bool "Compile the kernel in Thumb-2 mode" if !CPU_THUMBONLY
depends on (CPU_V7 || CPU_V7M) && !CPU_V6 && !CPU_V6K
@ -1934,6 +1934,7 @@ config ZBOOT_ROM_BSS
config ZBOOT_ROM
bool "Compressed boot loader in ROM/flash"
depends on ZBOOT_ROM_TEXT != ZBOOT_ROM_BSS
depends on !ARM_APPENDED_DTB && !XIP_KERNEL && !AUTO_ZRELADDR
help
Say Y here if you intend to execute your compressed kernel image
(zImage) directly from ROM or flash. If unsure, say N.
@ -1969,7 +1970,7 @@ endchoice
config ARM_APPENDED_DTB
bool "Use appended device tree blob to zImage (EXPERIMENTAL)"
depends on OF && !ZBOOT_ROM
depends on OF
help
With this option, the boot code will look for a device tree binary
(DTB) appended to zImage
@ -2057,7 +2058,7 @@ endchoice
config XIP_KERNEL
bool "Kernel Execute-In-Place from ROM"
depends on !ZBOOT_ROM && !ARM_LPAE && !ARCH_MULTIPLATFORM
depends on !ARM_LPAE && !ARCH_MULTIPLATFORM
help
Execute-In-Place allows the kernel to run from non-volatile storage
directly addressable by the CPU, such as NOR flash. This saves RAM
@ -2120,7 +2121,6 @@ config CRASH_DUMP
config AUTO_ZRELADDR
bool "Auto calculation of the decompressed kernel image address"
depends on !ZBOOT_ROM
help
ZRELADDR is the physical address where the decompressed kernel
image will be placed. If AUTO_ZRELADDR is selected, the address

39
arch/arm/Kconfig.debug
View File

@ -2,6 +2,18 @@ menu "Kernel hacking"
source "lib/Kconfig.debug"
config ARM_PTDUMP
bool "Export kernel pagetable layout to userspace via debugfs"
depends on DEBUG_KERNEL
select DEBUG_FS
---help---
Say Y here if you want to show the kernel pagetable layout in a
debugfs file. This information is only useful for kernel developers
who are working in architecture specific areas of the kernel.
It is probably not a good idea to enable this feature in a production
kernel.
If in doubt, say "N"
config STRICT_DEVMEM
bool "Filter access to /dev/mem"
depends on MMU
@ -94,6 +106,17 @@ choice
depends on ARCH_BCM2835
select DEBUG_UART_PL01X
config DEBUG_BCM_KONA_UART
bool "Kernel low-level debugging messages via BCM KONA UART"
depends on ARCH_BCM
select DEBUG_UART_8250
help
Say Y here if you want kernel low-level debugging support
on Broadcom SoC platforms.
This low level debug works for Broadcom
mobile SoCs in the Kona family of chips (e.g. bcm28155,
bcm11351, etc...)
config DEBUG_CLPS711X_UART1
bool "Kernel low-level debugging messages via UART1"
depends on ARCH_CLPS711X
@ -988,6 +1011,7 @@ config DEBUG_UART_PHYS
default 0x20064000 if DEBUG_RK29_UART1 || DEBUG_RK3X_UART2
default 0x20068000 if DEBUG_RK29_UART2 || DEBUG_RK3X_UART3
default 0x20201000 if DEBUG_BCM2835
default 0x3e000000 if DEBUG_BCM_KONA_UART
default 0x4000e400 if DEBUG_LL_UART_EFM32
default 0x40090000 if ARCH_LPC32XX
default 0x40100000 if DEBUG_PXA_UART1
@ -1049,6 +1073,7 @@ config DEBUG_UART_VIRT
default 0xfe018000 if DEBUG_MMP_UART3
default 0xfe100000 if DEBUG_IMX23_UART || DEBUG_IMX28_UART
default 0xfe230000 if DEBUG_PICOXCELL_UART
default 0xfe300000 if DEBUG_BCM_KONA_UART
default 0xfe800000 if ARCH_IOP32X
default 0xfeb00000 if DEBUG_HI3620_UART || DEBUG_HI3716_UART
default 0xfeb24000 if DEBUG_RK3X_UART0
@ -1091,7 +1116,8 @@ config DEBUG_UART_8250_WORD
default y if DEBUG_PICOXCELL_UART || DEBUG_SOCFPGA_UART || \
ARCH_KEYSTONE || \
DEBUG_DAVINCI_DMx_UART0 || DEBUG_DAVINCI_DA8XX_UART1 || \
DEBUG_DAVINCI_DA8XX_UART2 || DEBUG_DAVINCI_TNETV107X_UART1
DEBUG_DAVINCI_DA8XX_UART2 || DEBUG_DAVINCI_TNETV107X_UART1 || \
DEBUG_BCM_KONA_UART
config DEBUG_UART_8250_FLOW_CONTROL
bool "Enable flow control for 8250 UART"
@ -1150,4 +1176,15 @@ config PID_IN_CONTEXTIDR
additional instructions during context switch. Say Y here only if you
are planning to use hardware trace tools with this kernel.
config DEBUG_SET_MODULE_RONX
bool "Set loadable kernel module data as NX and text as RO"
depends on MODULES
---help---
This option helps catch unintended modifications to loadable
kernel module's text and read-only data. It also prevents execution
of module data. Such protection may interfere with run-time code
patching and dynamic kernel tracing - and they might also protect
against certain classes of kernel exploits.
If in doubt, say "N".
endmenu

15
arch/arm/boot/compressed/Makefile
View File

@ -108,12 +108,12 @@ endif
targets := vmlinux vmlinux.lds \
piggy.$(suffix_y) piggy.$(suffix_y).o \
lib1funcs.o lib1funcs.S ashldi3.o ashldi3.S \
font.o font.c head.o misc.o $(OBJS)
lib1funcs.o lib1funcs.S ashldi3.o ashldi3.S bswapsdi2.o \
bswapsdi2.S font.o font.c head.o misc.o $(OBJS)
# Make sure files are removed during clean
extra-y += piggy.gzip piggy.lzo piggy.lzma piggy.xzkern piggy.lz4 \
lib1funcs.S ashldi3.S $(libfdt) $(libfdt_hdrs) \
lib1funcs.S ashldi3.S bswapsdi2.S $(libfdt) $(libfdt_hdrs) \
hyp-stub.S
ifeq ($(CONFIG_FUNCTION_TRACER),y)
@ -156,6 +156,12 @@ ashldi3 = $(obj)/ashldi3.o
$(obj)/ashldi3.S: $(srctree)/arch/$(SRCARCH)/lib/ashldi3.S
$(call cmd,shipped)
# For __bswapsi2, __bswapdi2
bswapsdi2 = $(obj)/bswapsdi2.o
$(obj)/bswapsdi2.S: $(srctree)/arch/$(SRCARCH)/lib/bswapsdi2.S
$(call cmd,shipped)
# We need to prevent any GOTOFF relocs being used with references
# to symbols in the .bss section since we cannot relocate them
# independently from the rest at run time. This can be achieved by
@ -177,7 +183,8 @@ if [ $(words $(ZRELADDR)) -gt 1 -a "$(CONFIG_AUTO_ZRELADDR)" = "" ]; then \
fi
$(obj)/vmlinux: $(obj)/vmlinux.lds $(obj)/$(HEAD) $(obj)/piggy.$(suffix_y).o \
$(addprefix $(obj)/, $(OBJS)) $(lib1funcs) $(ashldi3) FORCE
$(addprefix $(obj)/, $(OBJS)) $(lib1funcs) $(ashldi3) \
$(bswapsdi2) FORCE
@$(check_for_multiple_zreladdr)
$(call if_changed,ld)
@$(check_for_bad_syms)

7
arch/arm/common/mcpm_entry.c
View File

@ -35,8 +35,7 @@ void mcpm_set_early_poke(unsigned cpu, unsigned cluster,
unsigned long *poke = &mcpm_entry_early_pokes[cluster][cpu][0];
poke[0] = poke_phys_addr;
poke[1] = poke_val;
__cpuc_flush_dcache_area((void *)poke, 8);
outer_clean_range(__pa(poke), __pa(poke + 2));
__sync_cache_range_w(poke, 2 * sizeof(*poke));
}
static const struct mcpm_platform_ops *platform_ops;
@ -167,7 +166,7 @@ void __mcpm_cpu_down(unsigned int cpu, unsigned int cluster)
dmb();
mcpm_sync.clusters[cluster].cpus[cpu].cpu = CPU_DOWN;
sync_cache_w(&mcpm_sync.clusters[cluster].cpus[cpu].cpu);
dsb_sev();
sev();
}
/*
@ -183,7 +182,7 @@ void __mcpm_outbound_leave_critical(unsigned int cluster, int state)
dmb();
mcpm_sync.clusters[cluster].cluster = state;
sync_cache_w(&mcpm_sync.clusters[cluster].cluster);
dsb_sev();
sev();
}
/*

58
arch/arm/include/asm/bitops.h
View File

@ -254,25 +254,59 @@ static inline int constant_fls(int x)
}
/*
* On ARMv5 and above those functions can be implemented around
* the clz instruction for much better code efficiency.
* On ARMv5 and above those functions can be implemented around the
* clz instruction for much better code efficiency. __clz returns
* the number of leading zeros, zero input will return 32, and
* 0x80000000 will return 0.
*/
static inline int fls(int x)
static inline unsigned int __clz(unsigned int x)
{
int ret;
if (__builtin_constant_p(x))
return constant_fls(x);
unsigned int ret;
asm("clz\t%0, %1" : "=r" (ret) : "r" (x));
ret = 32 - ret;
return ret;
}
#define __fls(x) (fls(x) - 1)
#define ffs(x) ({ unsigned long __t = (x); fls(__t & -__t); })
#define __ffs(x) (ffs(x) - 1)
/*
* fls() returns zero if the input is zero, otherwise returns the bit
* position of the last set bit, where the LSB is 1 and MSB is 32.
*/
static inline int fls(int x)
{
if (__builtin_constant_p(x))
return constant_fls(x);
return 32 - __clz(x);
}
/*
* __fls() returns the bit position of the last bit set, where the
* LSB is 0 and MSB is 31. Zero input is undefined.
*/
static inline unsigned long __fls(unsigned long x)
{
return fls(x) - 1;
}
/*
* ffs() returns zero if the input was zero, otherwise returns the bit
* position of the first set bit, where the LSB is 1 and MSB is 32.
*/
static inline int ffs(int x)
{
return fls(x & -x);
}
/*
* __ffs() returns the bit position of the first bit set, where the
* LSB is 0 and MSB is 31. Zero input is undefined.
*/
static inline unsigned long __ffs(unsigned long x)
{
return ffs(x) - 1;
}
#define ffz(x) __ffs( ~(x) )
#endif

5
arch/arm/include/asm/cacheflush.h
View File

@ -481,4 +481,9 @@ static inline void __sync_cache_range_r(volatile void *p, size_t size)
: : : "r0","r1","r2","r3","r4","r5","r6","r7", \
"r9","r10","lr","memory" )
int set_memory_ro(unsigned long addr, int numpages);
int set_memory_rw(unsigned long addr, int numpages);
int set_memory_x(unsigned long addr, int numpages);
int set_memory_nx(unsigned long addr, int numpages);
#endif

34
arch/arm/include/asm/checksum.h
View File

@ -87,19 +87,33 @@ static inline __wsum
csum_tcpudp_nofold(__be32 saddr, __be32 daddr, unsigned short len,
unsigned short proto, __wsum sum)
{
__asm__(
"adds %0, %1, %2 @ csum_tcpudp_nofold \n\
adcs %0, %0, %3 \n"
u32 lenprot = len | proto << 16;
if (__builtin_constant_p(sum) && sum == 0) {
__asm__(
"adds %0, %1, %2 @ csum_tcpudp_nofold0 \n\t"
#ifdef __ARMEB__
"adcs %0, %0, %4 \n"
"adcs %0, %0, %3 \n\t"
#else
"adcs %0, %0, %4, lsl #8 \n"
"adcs %0, %0, %3, ror #8 \n\t"
#endif
"adcs %0, %0, %5 \n\
adc %0, %0, #0"
: "=&r"(sum)
: "r" (sum), "r" (daddr), "r" (saddr), "r" (len), "Ir" (htons(proto))
: "cc");
"adc %0, %0, #0"
: "=&r" (sum)
: "r" (daddr), "r" (saddr), "r" (lenprot)
: "cc");
} else {
__asm__(
"adds %0, %1, %2 @ csum_tcpudp_nofold \n\t"
"adcs %0, %0, %3 \n\t"
#ifdef __ARMEB__
"adcs %0, %0, %4 \n\t"
#else
"adcs %0, %0, %4, ror #8 \n\t"
#endif
"adc %0, %0, #0"
: "=&r"(sum)
: "r" (sum), "r" (daddr), "r" (saddr), "r" (lenprot)
: "cc");
}
return sum;
}
/*

1
arch/arm/include/asm/hardware/cache-l2x0.h
View File

@ -131,6 +131,7 @@ struct l2x0_regs {
unsigned long prefetch_ctrl;
unsigned long pwr_ctrl;
unsigned long ctrl;
unsigned long aux2_ctrl;
};
extern struct l2x0_regs l2x0_saved_regs;

27
arch/arm/include/asm/mach/map.h
View File

@ -22,18 +22,21 @@ struct map_desc {
};
/* types 0-3 are defined in asm/io.h */
#define MT_UNCACHED 4
#define MT_CACHECLEAN 5
#define MT_MINICLEAN 6
#define MT_LOW_VECTORS 7
#define MT_HIGH_VECTORS 8
#define MT_MEMORY 9
#define MT_ROM 10
#define MT_MEMORY_NONCACHED 11
#define MT_MEMORY_DTCM 12
#define MT_MEMORY_ITCM 13
#define MT_MEMORY_SO 14
#define MT_MEMORY_DMA_READY 15
enum {
MT_UNCACHED = 4,
MT_CACHECLEAN,
MT_MINICLEAN,
MT_LOW_VECTORS,
MT_HIGH_VECTORS,
MT_MEMORY_RWX,
MT_MEMORY_RW,
MT_ROM,
MT_MEMORY_RWX_NONCACHED,
MT_MEMORY_RW_DTCM,
MT_MEMORY_RWX_ITCM,
MT_MEMORY_RW_SO,
MT_MEMORY_DMA_READY,
};
#ifdef CONFIG_MMU
extern void iotable_init(struct map_desc *, int);

5
arch/arm/include/asm/pci.h
View File

@ -57,12 +57,9 @@ static inline void pci_dma_burst_advice(struct pci_dev *pdev,
extern int pci_mmap_page_range(struct pci_dev *dev, struct vm_area_struct *vma,
enum pci_mmap_state mmap_state, int write_combine);
/*
* Dummy implementation; always return 0.
*/
static inline int pci_get_legacy_ide_irq(struct pci_dev *dev, int channel)
{
return 0;
return channel ? 15 : 14;
}
#endif /* __KERNEL__ */

1
arch/arm/include/asm/pgtable-2level.h
View File

@ -160,6 +160,7 @@ static inline pmd_t *pmd_offset(pud_t *pud, unsigned long addr)
return (pmd_t *)pud;
}
#define pmd_large(pmd) (pmd_val(pmd) & 2)
#define pmd_bad(pmd) (pmd_val(pmd) & 2)
#define copy_pmd(pmdpd,pmdps) \

1
arch/arm/include/asm/pgtable-3level.h
View File

@ -142,6 +142,7 @@
PMD_TYPE_TABLE)
#define pmd_sect(pmd) ((pmd_val(pmd) & PMD_TYPE_MASK) == \
PMD_TYPE_SECT)
#define pmd_large(pmd) pmd_sect(pmd)
#define pud_clear(pudp) \
do { \

2
arch/arm/include/asm/pgtable.h
View File

@ -254,6 +254,8 @@ PTE_BIT_FUNC(mkclean, &= ~L_PTE_DIRTY);
PTE_BIT_FUNC(mkdirty, |= L_PTE_DIRTY);
PTE_BIT_FUNC(mkold, &= ~L_PTE_YOUNG);
PTE_BIT_FUNC(mkyoung, |= L_PTE_YOUNG);
PTE_BIT_FUNC(mkexec, &= ~L_PTE_XN);
PTE_BIT_FUNC(mknexec, |= L_PTE_XN);
static inline pte_t pte_mkspecial(pte_t pte) { return pte; }

18
arch/arm/include/asm/word-at-a-time.h
View File

@ -48,10 +48,14 @@ static inline unsigned long find_zero(unsigned long mask)
return ret;
}
#ifdef CONFIG_DCACHE_WORD_ACCESS
#define zero_bytemask(mask) (mask)
#else /* __ARMEB__ */
#include <asm-generic/word-at-a-time.h>
#endif
#ifdef CONFIG_DCACHE_WORD_ACCESS
/*
* Load an unaligned word from kernel space.
*
@ -73,7 +77,11 @@ static inline unsigned long load_unaligned_zeropad(const void *addr)
" bic %2, %2, #0x3\n"
" ldr %0, [%2]\n"
" lsl %1, %1, #0x3\n"
#ifndef __ARMEB__
" lsr %0, %0, %1\n"
#else
" lsl %0, %0, %1\n"
#endif
" b 2b\n"
" .popsection\n"
" .pushsection __ex_table,\"a\"\n"
@ -86,11 +94,5 @@ static inline unsigned long load_unaligned_zeropad(const void *addr)
return ret;
}
#endif /* DCACHE_WORD_ACCESS */
#else /* __ARMEB__ */
#include <asm-generic/word-at-a-time.h>
#endif
#endif /* __ASM_ARM_WORD_AT_A_TIME_H */

4
arch/arm/kernel/armksyms.c
View File

@ -35,6 +35,8 @@ extern void __ucmpdi2(void);
extern void __udivsi3(void);
extern void __umodsi3(void);
extern void __do_div64(void);
extern void __bswapsi2(void);
extern void __bswapdi2(void);
extern void __aeabi_idiv(void);
extern void __aeabi_idivmod(void);
@ -114,6 +116,8 @@ EXPORT_SYMBOL(__ucmpdi2);
EXPORT_SYMBOL(__udivsi3);
EXPORT_SYMBOL(__umodsi3);
EXPORT_SYMBOL(__do_div64);
EXPORT_SYMBOL(__bswapsi2);
EXPORT_SYMBOL(__bswapdi2);
#ifdef CONFIG_AEABI
EXPORT_SYMBOL(__aeabi_idiv);

2
arch/arm/kernel/entry-v7m.S
View File

@ -14,8 +14,6 @@
#include <asm/thread_notify.h>
#include <asm/v7m.h>
#include <mach/entry-macro.S>
#include "entry-header.S"
#ifdef CONFIG_TRACE_IRQFLAGS

6
arch/arm/kernel/etm.c
View File

@ -385,7 +385,6 @@ out:
return ret;
out_unmap:
amba_set_drvdata(dev, NULL);
iounmap(t->etb_regs);
out_release:
@ -398,8 +397,6 @@ static int etb_remove(struct amba_device *dev)
{
struct tracectx *t = amba_get_drvdata(dev);
amba_set_drvdata(dev, NULL);
iounmap(t->etb_regs);
t->etb_regs = NULL;
@ -588,7 +585,6 @@ out:
return ret;
out_unmap:
amba_set_drvdata(dev, NULL);
iounmap(t->etm_regs);
out_release:
@ -601,8 +597,6 @@ static int etm_remove(struct amba_device *dev)
{
struct tracectx *t = amba_get_drvdata(dev);
amba_set_drvdata(dev, NULL);
iounmap(t->etm_regs);
t->etm_regs = NULL;

57
arch/arm/kernel/setup.c
View File

@ -334,7 +334,7 @@ static void __init cacheid_init(void)
cacheid = CACHEID_VIVT;
}
printk("CPU: %s data cache, %s instruction cache\n",
pr_info("CPU: %s data cache, %s instruction cache\n",
cache_is_vivt() ? "VIVT" :
cache_is_vipt_aliasing() ? "VIPT aliasing" :
cache_is_vipt_nonaliasing() ? "PIPT / VIPT nonaliasing" : "unknown",
@ -416,7 +416,7 @@ void notrace cpu_init(void)
struct stack *stk = &stacks[cpu];
if (cpu >= NR_CPUS) {
printk(KERN_CRIT "CPU%u: bad primary CPU number\n", cpu);
pr_crit("CPU%u: bad primary CPU number\n", cpu);
BUG();
}
@ -484,7 +484,7 @@ void __init smp_setup_processor_id(void)
*/
set_my_cpu_offset(0);
printk(KERN_INFO "Booting Linux on physical CPU 0x%x\n", mpidr);
pr_info("Booting Linux on physical CPU 0x%x\n", mpidr);
}
struct mpidr_hash mpidr_hash;
@ -564,8 +564,8 @@ static void __init setup_processor(void)
*/
list = lookup_processor_type(read_cpuid_id());
if (!list) {
printk("CPU configuration botched (ID %08x), unable "
"to continue.\n", read_cpuid_id());
pr_err("CPU configuration botched (ID %08x), unable to continue.\n",
read_cpuid_id());
while (1);
}
@ -585,9 +585,9 @@ static void __init setup_processor(void)
cpu_cache = *list->cache;
#endif
printk("CPU: %s [%08x] revision %d (ARMv%s), cr=%08lx\n",
cpu_name, read_cpuid_id(), read_cpuid_id() & 15,
proc_arch[cpu_architecture()], cr_alignment);
pr_info("CPU: %s [%08x] revision %d (ARMv%s), cr=%08lx\n",
cpu_name, read_cpuid_id(), read_cpuid_id() & 15,
proc_arch[cpu_architecture()], cr_alignment);
snprintf(init_utsname()->machine, __NEW_UTS_LEN + 1, "%s%c",
list->arch_name, ENDIANNESS);
@ -629,8 +629,8 @@ int __init arm_add_memory(u64 start, u64 size)
u64 aligned_start;
if (meminfo.nr_banks >= NR_BANKS) {
printk(KERN_CRIT "NR_BANKS too low, "
"ignoring memory at 0x%08llx\n", (long long)start);
pr_crit("NR_BANKS too low, ignoring memory at 0x%08llx\n",
(long long)start);
return -EINVAL;
}
@ -643,14 +643,14 @@ int __init arm_add_memory(u64 start, u64 size)
#ifndef CONFIG_ARCH_PHYS_ADDR_T_64BIT
if (aligned_start > ULONG_MAX) {
printk(KERN_CRIT "Ignoring memory at 0x%08llx outside "
"32-bit physical address space\n", (long long)start);
pr_crit("Ignoring memory at 0x%08llx outside 32-bit physical address space\n",
(long long)start);
return -EINVAL;
}
if (aligned_start + size > ULONG_MAX) {
printk(KERN_CRIT "Truncating memory at 0x%08llx to fit in "
"32-bit physical address space\n", (long long)start);
pr_crit("Truncating memory at 0x%08llx to fit in 32-bit physical address space\n",
(long long)start);
/*
* To ensure bank->start + bank->size is representable in
* 32 bits, we use ULONG_MAX as the upper limit rather than 4GB.
@ -660,6 +660,20 @@ int __init arm_add_memory(u64 start, u64 size)
}
#endif
if (aligned_start < PHYS_OFFSET) {
if (aligned_start + size <= PHYS_OFFSET) {
pr_info("Ignoring memory below PHYS_OFFSET: 0x%08llx-0x%08llx\n",
aligned_start, aligned_start + size);
return -EINVAL;
}
pr_info("Ignoring memory below PHYS_OFFSET: 0x%08llx-0x%08llx\n",
aligned_start, (u64)PHYS_OFFSET);
size -= PHYS_OFFSET - aligned_start;
aligned_start = PHYS_OFFSET;
}
bank->start = aligned_start;
bank->size = size & ~(phys_addr_t)(PAGE_SIZE - 1);
@ -817,18 +831,17 @@ static void __init reserve_crashkernel(void)
if (ret)
return;
ret = reserve_bootmem(crash_base, crash_size, BOOTMEM_EXCLUSIVE);
ret = memblock_reserve(crash_base, crash_size);
if (ret < 0) {
printk(KERN_WARNING "crashkernel reservation failed - "
"memory is in use (0x%lx)\n", (unsigned long)crash_base);
pr_warn("crashkernel reservation failed - memory is in use (0x%lx)\n",
(unsigned long)crash_base);
return;
}
printk(KERN_INFO "Reserving %ldMB of memory at %ldMB "
"for crashkernel (System RAM: %ldMB)\n",
(unsigned long)(crash_size >> 20),
(unsigned long)(crash_base >> 20),
(unsigned long)(total_mem >> 20));
pr_info("Reserving %ldMB of memory at %ldMB for crashkernel (System RAM: %ldMB)\n",
(unsigned long)(crash_size >> 20),
(unsigned long)(crash_base >> 20),
(unsigned long)(total_mem >> 20));
crashk_res.start = crash_base;
crashk_res.end = crash_base + crash_size - 1;

6
arch/arm/kernel/smp.c
View File

@ -105,8 +105,7 @@ int __cpu_up(unsigned int cpu, struct task_struct *idle)
secondary_data.pgdir = get_arch_pgd(idmap_pgd);
secondary_data.swapper_pg_dir = get_arch_pgd(swapper_pg_dir);
#endif
__cpuc_flush_dcache_area(&secondary_data, sizeof(secondary_data));
outer_clean_range(__pa(&secondary_data), __pa(&secondary_data + 1));
sync_cache_w(&secondary_data);
/*
* Now bring the CPU into our world.
@ -294,6 +293,9 @@ void __ref cpu_die(void)
if (smp_ops.cpu_die)
smp_ops.cpu_die(cpu);
pr_warn("CPU%u: smp_ops.cpu_die() returned, trying to resuscitate\n",
cpu);
/*
* Do not return to the idle loop - jump back to the secondary
* cpu initialisation. There's some initialisation which needs

4
arch/arm/kernel/tcm.c
View File

@ -52,7 +52,7 @@ static struct map_desc dtcm_iomap[] __initdata = {
.virtual = DTCM_OFFSET,
.pfn = __phys_to_pfn(DTCM_OFFSET),
.length = 0,
.type = MT_MEMORY_DTCM
.type = MT_MEMORY_RW_DTCM
}
};
@ -61,7 +61,7 @@ static struct map_desc itcm_iomap[] __initdata = {
.virtual = ITCM_OFFSET,
.pfn = __phys_to_pfn(ITCM_OFFSET),
.length = 0,
.type = MT_MEMORY_ITCM
.type = MT_MEMORY_RWX_ITCM,
}
};

12
arch/arm/kernel/topology.c
View File

@ -68,16 +68,16 @@ struct cpu_efficiency {
* Processors that are not defined in the table,
* use the default SCHED_POWER_SCALE value for cpu_scale.
*/
struct cpu_efficiency table_efficiency[] = {
static const struct cpu_efficiency table_efficiency[] = {
{"arm,cortex-a15", 3891},
{"arm,cortex-a7", 2048},
{NULL, },
};
unsigned long *__cpu_capacity;
static unsigned long *__cpu_capacity;
#define cpu_capacity(cpu) __cpu_capacity[cpu]
unsigned long middle_capacity = 1;
static unsigned long middle_capacity = 1;
/*
* Iterate all CPUs' descriptor in DT and compute the efficiency
@ -89,7 +89,7 @@ unsigned long middle_capacity = 1;
*/
static void __init parse_dt_topology(void)
{
struct cpu_efficiency *cpu_eff;
const struct cpu_efficiency *cpu_eff;
struct device_node *cn = NULL;
unsigned long min_capacity = (unsigned long)(-1);
unsigned long max_capacity = 0;
@ -158,7 +158,7 @@ static void __init parse_dt_topology(void)
* boot. The update of all CPUs is in O(n^2) for heteregeneous system but the
* function returns directly for SMP system.
*/
void update_cpu_power(unsigned int cpu)
static void update_cpu_power(unsigned int cpu)
{
if (!cpu_capacity(cpu))
return;
@ -185,7 +185,7 @@ const struct cpumask *cpu_coregroup_mask(int cpu)
return &cpu_topology[cpu].core_sibling;
}
void update_siblings_masks(unsigned int cpuid)
static void update_siblings_masks(unsigned int cpuid)
{
struct cputopo_arm *cpu_topo, *cpuid_topo = &cpu_topology[cpuid];
int cpu;

2
arch/arm/kernel/traps.c
View File

@ -62,7 +62,7 @@ static void dump_mem(const char *, const char *, unsigned long, unsigned long);
void dump_backtrace_entry(unsigned long where, unsigned long from, unsigned long frame)
{
#ifdef CONFIG_KALLSYMS
printk("[<%08lx>] (%pS) from [<%08lx>] (%pS)\n", where, (void *)where, from, (void *)from);
printk("[<%08lx>] (%ps) from [<%08lx>] (%pS)\n", where, (void *)where, from, (void *)from);
#else
printk("Function entered at [<%08lx>] from [<%08lx>]\n", where, from);
#endif

2
arch/arm/lib/Makefile
View File

@ -13,7 +13,7 @@ lib-y := backtrace.o changebit.o csumipv6.o csumpartial.o \
ashldi3.o ashrdi3.o lshrdi3.o muldi3.o \
ucmpdi2.o lib1funcs.o div64.o \
io-readsb.o io-writesb.o io-readsl.o io-writesl.o \
call_with_stack.o
call_with_stack.o bswapsdi2.o
mmu-y := clear_user.o copy_page.o getuser.o putuser.o

20
arch/arm/lib/backtrace.S
View File

@ -80,14 +80,14 @@ for_each_frame: tst frame, mask @ Check for address exceptions
ldr r1, [sv_pc, #-4] @ if stmfd sp!, {args} exists,
ldr r3, .Ldsi+4
teq r3, r1, lsr #10
teq r3, r1, lsr #11
ldreq r0, [frame, #-8] @ get sp
subeq r0, r0, #4 @ point at the last arg
bleq .Ldumpstm @ dump saved registers
1004: ldr r1, [sv_pc, #0] @ if stmfd sp!, {..., fp, ip, lr, pc}
ldr r3, .Ldsi @ instruction exists,
teq r3, r1, lsr #10
teq r3, r1, lsr #11
subeq r0, frame, #16
bleq .Ldumpstm @ dump saved registers
@ -128,11 +128,11 @@ ENDPROC(c_backtrace)
beq 2f
add r7, r7, #1
teq r7, #6
moveq r7, #1
moveq r1, #'\n'
movne r1, #' '
ldr r3, [stack], #-4
mov r2, reg
moveq r7, #0
adr r3, .Lcr
addne r3, r3, #1 @ skip newline
ldr r2, [stack], #-4
mov r1, reg
adr r0, .Lfp
bl printk
2: subs reg, reg, #1
@ -142,11 +142,11 @@ ENDPROC(c_backtrace)
blne printk
ldmfd sp!, {instr, reg, stack, r7, pc}
.Lfp: .asciz "%cr%d:%08x"
.Lfp: .asciz " r%d:%08x%s"
.Lcr: .asciz "\n"
.Lbad: .asciz "Backtrace aborted due to bad frame pointer <%p>\n"
.align
.Ldsi: .word 0xe92dd800 >> 10 @ stmfd sp!, {... fp, ip, lr, pc}
.word 0xe92d0000 >> 10 @ stmfd sp!, {}
.Ldsi: .word 0xe92dd800 >> 11 @ stmfd sp!, {... fp, ip, lr, pc}
.word 0xe92d0000 >> 11 @ stmfd sp!, {}
#endif

36
arch/arm/lib/bswapsdi2.S Normal file
View File

@ -0,0 +1,36 @@
#include <linux/linkage.h>
#if __LINUX_ARM_ARCH__ >= 6
ENTRY(__bswapsi2)
rev r0, r0
bx lr
ENDPROC(__bswapsi2)
ENTRY(__bswapdi2)
rev r3, r0
rev r0, r1
mov r1, r3
bx lr
ENDPROC(__bswapdi2)
#else
ENTRY(__bswapsi2)
eor r3, r0, r0, ror #16
mov r3, r3, lsr #8
bic r3, r3, #0xff00
eor r0, r3, r0, ror #8
mov pc, lr
ENDPROC(__bswapsi2)
ENTRY(__bswapdi2)
mov ip, r1
eor r3, ip, ip, ror #16
eor r1, r0, r0, ror #16
mov r1, r1, lsr #8
mov r3, r3, lsr #8
bic r3, r3, #0xff00
bic r1, r1, #0xff00
eor r1, r1, r0, ror #8
eor r0, r3, ip, ror #8
mov pc, lr
ENDPROC(__bswapdi2)
#endif

2
arch/arm/mach-at91/setup.c
View File

@ -81,7 +81,7 @@ void __init at91_init_sram(int bank, unsigned long base, unsigned int length)
desc->pfn = __phys_to_pfn(base);
desc->length = length;
desc->type = MT_MEMORY_NONCACHED;
desc->type = MT_MEMORY_RWX_NONCACHED;
pr_info("AT91: sram at 0x%lx of 0x%x mapped at 0x%lx\n",
base, length, desc->virtual);

5
arch/arm/mach-footbridge/common.c
View File

@ -143,11 +143,6 @@ static struct map_desc fb_common_io_desc[] __initdata = {
.pfn = __phys_to_pfn(DC21285_ARMCSR_BASE),
.length = ARMCSR_SIZE,
.type = MT_DEVICE,
}, {
.virtual = XBUS_BASE,
.pfn = __phys_to_pfn(0x40000000),
.length = XBUS_SIZE,
.type = MT_DEVICE,
}
};

2
arch/arm/mach-footbridge/common.h
View File

@ -10,3 +10,5 @@ extern void footbridge_init_irq(void);
extern void isa_init_irq(unsigned int irq);
extern void footbridge_restart(enum reboot_mode, const char *);
extern void footbridge_sched_clock(void);

39
arch/arm/mach-footbridge/dc21285-timer.c
View File

@ -9,6 +9,7 @@
#include <linux/init.h>
#include <linux/interrupt.h>
#include <linux/irq.h>
#include <linux/sched_clock.h>
#include <asm/irq.h>
@ -46,6 +47,16 @@ static struct clocksource cksrc_dc21285 = {
.flags = CLOCK_SOURCE_IS_CONTINUOUS,
};
static int ckevt_dc21285_set_next_event(unsigned long delta,
struct clock_event_device *c)
{
*CSR_TIMER1_CLR = 0;
*CSR_TIMER1_LOAD = delta;
*CSR_TIMER1_CNTL = TIMER_CNTL_ENABLE | TIMER_CNTL_DIV16;
return 0;
}
static void ckevt_dc21285_set_mode(enum clock_event_mode mode,
struct clock_event_device *c)
{
@ -58,7 +69,9 @@ static void ckevt_dc21285_set_mode(enum clock_event_mode mode,
TIMER_CNTL_DIV16;
break;
default:
case CLOCK_EVT_MODE_ONESHOT:
case CLOCK_EVT_MODE_UNUSED:
case CLOCK_EVT_MODE_SHUTDOWN:
*CSR_TIMER1_CNTL = 0;
break;
}
@ -66,9 +79,11 @@ static void ckevt_dc21285_set_mode(enum clock_event_mode mode,
static struct clock_event_device ckevt_dc21285 = {
.name = "dc21285_timer1",
.features = CLOCK_EVT_FEAT_PERIODIC,
.features = CLOCK_EVT_FEAT_PERIODIC |
CLOCK_EVT_FEAT_ONESHOT,
.rating = 200,
.irq = IRQ_TIMER1,
.set_next_event = ckevt_dc21285_set_next_event,
.set_mode = ckevt_dc21285_set_mode,
};
@ -78,6 +93,10 @@ static irqreturn_t timer1_interrupt(int irq, void *dev_id)
*CSR_TIMER1_CLR = 0;
/* Stop the timer if in one-shot mode */
if (ce->mode == CLOCK_EVT_MODE_ONESHOT)
*CSR_TIMER1_CNTL = 0;
ce->event_handler(ce);
return IRQ_HANDLED;
@ -105,3 +124,19 @@ void __init footbridge_timer_init(void)
ce->cpumask = cpumask_of(smp_processor_id());
clockevents_config_and_register(ce, rate, 0x4, 0xffffff);
}
static u32 notrace footbridge_read_sched_clock(void)
{
return ~*CSR_TIMER3_VALUE;
}
void __init footbridge_sched_clock(void)
{
unsigned rate = DIV_ROUND_CLOSEST(mem_fclk_21285, 16);
*CSR_TIMER3_LOAD = 0;
*CSR_TIMER3_CLR = 0;
*CSR_TIMER3_CNTL = TIMER_CNTL_ENABLE | TIMER_CNTL_DIV16;
setup_sched_clock(footbridge_read_sched_clock, 24, rate);
}

18
arch/arm/mach-footbridge/ebsa285.c
View File

@ -4,6 +4,7 @@
* EBSA285 machine fixup
*/
#include <linux/init.h>
#include <linux/io.h>
#include <linux/spinlock.h>
#include <linux/slab.h>
#include <linux/leds.h>
@ -17,6 +18,11 @@
/* LEDs */
#if defined(CONFIG_NEW_LEDS) && defined(CONFIG_LEDS_CLASS)
#define XBUS_AMBER_L BIT(0)
#define XBUS_GREEN_L BIT(1)
#define XBUS_RED_L BIT(2)
#define XBUS_TOGGLE BIT(7)
struct ebsa285_led {
struct led_classdev cdev;
u8 mask;
@ -36,6 +42,7 @@ static const struct {
};
static unsigned char hw_led_state;
static void __iomem *xbus;
static void ebsa285_led_set(struct led_classdev *cdev,
enum led_brightness b)
@ -47,7 +54,7 @@ static void ebsa285_led_set(struct led_classdev *cdev,
hw_led_state |= led->mask;
else
hw_led_state &= ~led->mask;
*XBUS_LEDS = hw_led_state;
writeb(hw_led_state, xbus);
}
static enum led_brightness ebsa285_led_get(struct led_classdev *cdev)
@ -65,9 +72,13 @@ static int __init ebsa285_leds_init(void)
if (!machine_is_ebsa285())
return -ENODEV;
xbus = ioremap(XBUS_CS2, SZ_4K);
if (!xbus)
return -ENOMEM;
/* 3 LEDS all off */
hw_led_state = XBUS_LED_AMBER | XBUS_LED_GREEN | XBUS_LED_RED;
*XBUS_LEDS = hw_led_state;
hw_led_state = XBUS_AMBER_L | XBUS_GREEN_L | XBUS_RED_L;
writeb(hw_led_state, xbus);
for (i = 0; i < ARRAY_SIZE(ebsa285_leds); i++) {
struct ebsa285_led *led;
@ -104,6 +115,7 @@ MACHINE_START(EBSA285, "EBSA285")
.video_start = 0x000a0000,
.video_end = 0x000bffff,
.map_io = footbridge_map_io,
.init_early = footbridge_sched_clock,
.init_irq = footbridge_init_irq,
.init_time = footbridge_timer_init,
.restart = footbridge_restart,

6
arch/arm/mach-footbridge/include/mach/hardware.h
View File

@ -51,11 +51,7 @@
#define PCIMEM_SIZE 0x01000000
#define PCIMEM_BASE MMU_IO(0xf0000000, 0x80000000)
#define XBUS_LEDS ((volatile unsigned char *)(XBUS_BASE + 0x12000))
#define XBUS_LED_AMBER (1 << 0)
#define XBUS_LED_GREEN (1 << 1)
#define XBUS_LED_RED (1 << 2)
#define XBUS_LED_TOGGLE (1 << 8)
#define XBUS_CS2 0x40012000
#define XBUS_SWITCH ((volatile unsigned char *)(XBUS_BASE + 0x12000))
#define XBUS_SWITCH_SWITCH ((*XBUS_SWITCH) & 15)

1
arch/arm/mach-imx/Kconfig
View File

@ -3,7 +3,6 @@ config ARCH_MXC
select ARCH_REQUIRE_GPIOLIB
select ARM_CPU_SUSPEND if PM
select ARM_PATCH_PHYS_VIRT
select AUTO_ZRELADDR if !ZBOOT_ROM
select CLKSRC_MMIO
select COMMON_CLK
select GENERIC_ALLOCATOR

4
arch/arm/mach-omap2/io.c
View File

@ -244,7 +244,7 @@ static struct map_desc omap44xx_io_desc[] __initdata = {
.virtual = OMAP4_SRAM_VA,
.pfn = __phys_to_pfn(OMAP4_SRAM_PA),
.length = PAGE_SIZE,
.type = MT_MEMORY_SO,
.type = MT_MEMORY_RW_SO,
},
#endif
@ -282,7 +282,7 @@ static struct map_desc omap54xx_io_desc[] __initdata = {
.virtual = OMAP4_SRAM_VA,
.pfn = __phys_to_pfn(OMAP4_SRAM_PA),
.length = PAGE_SIZE,
.type = MT_MEMORY_SO,
.type = MT_MEMORY_RW_SO,
},
#endif
};

2
arch/arm/mach-omap2/omap4-common.c
View File

@ -87,7 +87,7 @@ void __init omap_barriers_init(void)
dram_io_desc[0].virtual = OMAP4_DRAM_BARRIER_VA;
dram_io_desc[0].pfn = __phys_to_pfn(paddr);
dram_io_desc[0].length = size;
dram_io_desc[0].type = MT_MEMORY_SO;
dram_io_desc[0].type = MT_MEMORY_RW_SO;
iotable_init(dram_io_desc, ARRAY_SIZE(dram_io_desc));
dram_sync = (void __iomem *) dram_io_desc[0].virtual;
sram_sync = (void __iomem *) OMAP4_SRAM_VA;

145
arch/arm/mach-sa1100/assabet.c
View File

@ -75,12 +75,143 @@ void ASSABET_BCR_frob(unsigned int mask, unsigned int val)
EXPORT_SYMBOL(ASSABET_BCR_frob);
/*
* The codec reset goes to three devices, so we need to release
* the rest when any one of these requests it. However, that
* causes the ADV7171 to consume around 100mA - more than half
* the LCD-blanked power.
*
* With the ADV7171, LCD and backlight enabled, we go over
* budget on the MAX846 Li-Ion charger, and if no Li-Ion battery
* is connected, the Assabet crashes.
*/
#define RST_UCB1X00 (1 << 0)
#define RST_UDA1341 (1 << 1)
#define RST_ADV7171 (1 << 2)
#define SDA GPIO_GPIO(15)
#define SCK GPIO_GPIO(18)
#define MOD GPIO_GPIO(17)
static void adv7171_start(void)
{
GPSR = SCK;
udelay(1);
GPSR = SDA;
udelay(2);
GPCR = SDA;
}
static void adv7171_stop(void)
{
GPSR = SCK;
udelay(2);
GPSR = SDA;
udelay(1);
}
static void adv7171_send(unsigned byte)
{
unsigned i;
for (i = 0; i < 8; i++, byte <<= 1) {
GPCR = SCK;
udelay(1);
if (byte & 0x80)
GPSR = SDA;
else
GPCR = SDA;
udelay(1);
GPSR = SCK;
udelay(1);
}
GPCR = SCK;
udelay(1);
GPSR = SDA;
udelay(1);
GPDR &= ~SDA;
GPSR = SCK;
udelay(1);
if (GPLR & SDA)
printk(KERN_WARNING "No ACK from ADV7171\n");
udelay(1);
GPCR = SCK | SDA;
udelay(1);
GPDR |= SDA;
udelay(1);
}
static void adv7171_write(unsigned reg, unsigned val)
{
unsigned gpdr = GPDR;
unsigned gplr = GPLR;
ASSABET_BCR = BCR_value | ASSABET_BCR_AUDIO_ON;
udelay(100);
GPCR = SDA | SCK | MOD; /* clear L3 mode to ensure UDA1341 doesn't respond */
GPDR = (GPDR | SCK | MOD) & ~SDA;
udelay(10);
if (!(GPLR & SDA))
printk(KERN_WARNING "Something dragging SDA down?\n");
GPDR |= SDA;
adv7171_start();
adv7171_send(0x54);
adv7171_send(reg);
adv7171_send(val);
adv7171_stop();
/* Restore GPIO state for L3 bus */
GPSR = gplr & (SDA | SCK | MOD);
GPCR = (~gplr) & (SDA | SCK | MOD);
GPDR = gpdr;
}
static void adv7171_sleep(void)
{
/* Put the ADV7171 into sleep mode */
adv7171_write(0x04, 0x40);
}
static unsigned codec_nreset;
static void assabet_codec_reset(unsigned mask, int set)
{
unsigned long flags;
bool old;
local_irq_save(flags);
old = !codec_nreset;
if (set)
codec_nreset &= ~mask;
else
codec_nreset |= mask;
if (old != !codec_nreset) {
if (codec_nreset) {
ASSABET_BCR_set(ASSABET_BCR_NCODEC_RST);
adv7171_sleep();
} else {
ASSABET_BCR_clear(ASSABET_BCR_NCODEC_RST);
}
}
local_irq_restore(flags);
}
static void assabet_ucb1x00_reset(enum ucb1x00_reset state)
{
if (state == UCB_RST_PROBE)
ASSABET_BCR_set(ASSABET_BCR_CODEC_RST);
int set = state == UCB_RST_REMOVE || state == UCB_RST_SUSPEND ||
state == UCB_RST_PROBE_FAIL;
assabet_codec_reset(RST_UCB1X00, set);
}
void assabet_uda1341_reset(int set)
{
assabet_codec_reset(RST_UDA1341, set);
}
EXPORT_SYMBOL(assabet_uda1341_reset);
/*
* Assabet flash support code.
@ -155,12 +286,9 @@ static int assabet_irda_set_power(struct device *dev, unsigned int state)
0
};
if (state < 4) {
state = bcr_state[state];
ASSABET_BCR_clear(state ^ (ASSABET_BCR_IRDA_MD1|
ASSABET_BCR_IRDA_MD0));
ASSABET_BCR_set(state);
}
if (state < 4)
ASSABET_BCR_frob(ASSABET_BCR_IRDA_MD1 | ASSABET_BCR_IRDA_MD0,
bcr_state[state]);
return 0;
}
@ -180,6 +308,7 @@ static struct irda_platform_data assabet_irda_data = {
static struct ucb1x00_plat_data assabet_ucb1x00_data = {
.reset = assabet_ucb1x00_reset,
.gpio_base = -1,
.can_wakeup = 1,
};
static struct mcp_plat_data assabet_mcp_data = {

35
arch/arm/mach-sa1100/collie.c
View File

@ -27,6 +27,8 @@
#include <linux/mtd/mtd.h>
#include <linux/mtd/partitions.h>
#include <linux/timer.h>
#include <linux/gpio_keys.h>
#include <linux/input.h>
#include <linux/gpio.h>
#include <linux/pda_power.h>
@ -242,10 +244,43 @@ struct platform_device collie_locomo_device = {
.resource = locomo_resources,
};
static struct gpio_keys_button collie_gpio_keys[] = {
{
.type = EV_PWR,
.code = KEY_RESERVED,
.gpio = COLLIE_GPIO_ON_KEY,
.desc = "On key",
.wakeup = 1,
.active_low = 1,
},
{
.type = EV_PWR,
.code = KEY_WAKEUP,
.gpio = COLLIE_GPIO_WAKEUP,
.desc = "Sync",
.wakeup = 1,
.active_low = 1,
},
};
static struct gpio_keys_platform_data collie_gpio_keys_data = {
.buttons = collie_gpio_keys,
.nbuttons = ARRAY_SIZE(collie_gpio_keys),
};
static struct platform_device collie_gpio_keys_device = {
.name = "gpio-keys",
.id = -1,
.dev = {
.platform_data = &collie_gpio_keys_data,
},
};
static struct platform_device *devices[] __initdata = {
&collie_locomo_device,
&colliescoop_device,
&collie_power_device,
&collie_gpio_keys_device,
};
static struct mtd_partition collie_partitions[] = {

54
arch/arm/mach-sa1100/h3100.c
View File

@ -28,15 +28,35 @@
/*
* helper for sa1100fb
*/
static struct gpio h3100_lcd_gpio[] = {
{ H3100_GPIO_LCD_3V_ON, GPIOF_OUT_INIT_LOW, "LCD 3V" },
{ H3XXX_EGPIO_LCD_ON, GPIOF_OUT_INIT_LOW, "LCD ON" },
};
static bool h3100_lcd_request(void)
{
static bool h3100_lcd_ok;
int rc;
if (h3100_lcd_ok)
return true;
rc = gpio_request_array(h3100_lcd_gpio, ARRAY_SIZE(h3100_lcd_gpio));
if (rc)
pr_err("%s: can't request GPIOs\n", __func__);
else
h3100_lcd_ok = true;
return h3100_lcd_ok;
}
static void h3100_lcd_power(int enable)
{
if (!gpio_request(H3XXX_EGPIO_LCD_ON, "LCD ON")) {
gpio_set_value(H3100_GPIO_LCD_3V_ON, enable);
gpio_direction_output(H3XXX_EGPIO_LCD_ON, enable);
gpio_free(H3XXX_EGPIO_LCD_ON);
} else {
pr_err("%s: can't request H3XXX_EGPIO_LCD_ON\n", __func__);
}
if (!h3100_lcd_request())
return;
gpio_set_value(H3100_GPIO_LCD_3V_ON, enable);
gpio_set_value(H3XXX_EGPIO_LCD_ON, enable);
}
static struct sa1100fb_mach_info h3100_lcd_info = {
@ -69,6 +89,11 @@ static void __init h3100_map_io(void)
/*
* This turns the IRDA power on or off on the Compaq H3100
*/
static struct gpio h3100_irda_gpio[] = {
{ H3100_GPIO_IR_ON, GPIOF_OUT_INIT_LOW, "IrDA power" },
{ H3100_GPIO_IR_FSEL, GPIOF_OUT_INIT_LOW, "IrDA fsel" },
};
static int h3100_irda_set_power(struct device *dev, unsigned int state)
{
gpio_set_value(H3100_GPIO_IR_ON, state);
@ -80,18 +105,27 @@ static void h3100_irda_set_speed(struct device *dev, unsigned int speed)
gpio_set_value(H3100_GPIO_IR_FSEL, !(speed < 4000000));
}
static int h3100_irda_startup(struct device *dev)
{
return gpio_request_array(h3100_irda_gpio, sizeof(h3100_irda_gpio));
}
static void h3100_irda_shutdown(struct device *dev)
{
return gpio_free_array(h3100_irda_gpio, sizeof(h3100_irda_gpio));
}
static struct irda_platform_data h3100_irda_data = {
.set_power = h3100_irda_set_power,
.set_speed = h3100_irda_set_speed,
.startup = h3100_irda_startup,
.shutdown = h3100_irda_shutdown,
};
static struct gpio_default_state h3100_default_gpio[] = {
{ H3100_GPIO_IR_ON, GPIO_MODE_OUT0, "IrDA power" },
{ H3100_GPIO_IR_FSEL, GPIO_MODE_OUT0, "IrDA fsel" },
{ H3XXX_GPIO_COM_DCD, GPIO_MODE_IN, "COM DCD" },
{ H3XXX_GPIO_COM_CTS, GPIO_MODE_IN, "COM CTS" },
{ H3XXX_GPIO_COM_RTS, GPIO_MODE_OUT0, "COM RTS" },
{ H3100_GPIO_LCD_3V_ON, GPIO_MODE_OUT0, "LCD 3v" },
};
static void __init h3100_mach_init(void)

74
arch/arm/mach-sa1100/h3600.c
View File

@ -28,35 +28,39 @@
/*
* helper for sa1100fb
*/
static struct gpio h3600_lcd_gpio[] = {
{ H3XXX_EGPIO_LCD_ON, GPIOF_OUT_INIT_LOW, "LCD power" },
{ H3600_EGPIO_LCD_PCI, GPIOF_OUT_INIT_LOW, "LCD control" },
{ H3600_EGPIO_LCD_5V_ON, GPIOF_OUT_INIT_LOW, "LCD 5v" },
{ H3600_EGPIO_LVDD_ON, GPIOF_OUT_INIT_LOW, "LCD 9v/-6.5v" },
};
static bool h3600_lcd_request(void)
{
static bool h3600_lcd_ok;
int rc;
if (h3600_lcd_ok)
return true;
rc = gpio_request_array(h3600_lcd_gpio, ARRAY_SIZE(h3600_lcd_gpio));
if (rc)
pr_err("%s: can't request GPIOs\n", __func__);
else
h3600_lcd_ok = true;
return h3600_lcd_ok;
}
static void h3600_lcd_power(int enable)
{
if (gpio_request(H3XXX_EGPIO_LCD_ON, "LCD power")) {
pr_err("%s: can't request H3XXX_EGPIO_LCD_ON\n", __func__);
goto err1;
}
if (gpio_request(H3600_EGPIO_LCD_PCI, "LCD control")) {
pr_err("%s: can't request H3XXX_EGPIO_LCD_PCI\n", __func__);
goto err2;
}
if (gpio_request(H3600_EGPIO_LCD_5V_ON, "LCD 5v")) {
pr_err("%s: can't request H3XXX_EGPIO_LCD_5V_ON\n", __func__);
goto err3;
}
if (gpio_request(H3600_EGPIO_LVDD_ON, "LCD 9v/-6.5v")) {
pr_err("%s: can't request H3600_EGPIO_LVDD_ON\n", __func__);
goto err4;
}
if (!h3600_lcd_request())
return;
gpio_direction_output(H3XXX_EGPIO_LCD_ON, enable);
gpio_direction_output(H3600_EGPIO_LCD_PCI, enable);
gpio_direction_output(H3600_EGPIO_LCD_5V_ON, enable);
gpio_direction_output(H3600_EGPIO_LVDD_ON, enable);
gpio_free(H3600_EGPIO_LVDD_ON);
err4: gpio_free(H3600_EGPIO_LCD_5V_ON);
err3: gpio_free(H3600_EGPIO_LCD_PCI);
err2: gpio_free(H3XXX_EGPIO_LCD_ON);
err1: return;
}
static const struct sa1100fb_rgb h3600_rgb_16 = {
@ -93,6 +97,11 @@ static void __init h3600_map_io(void)
/*
* This turns the IRDA power on or off on the Compaq H3600
*/
static struct gpio h3600_irda_gpio[] = {
{ H3600_EGPIO_IR_ON, GPIOF_OUT_INIT_LOW, "IrDA power" },
{ H3600_EGPIO_IR_FSEL, GPIOF_OUT_INIT_LOW, "IrDA fsel" },
};
static int h3600_irda_set_power(struct device *dev, unsigned int state)
{
gpio_set_value(H3600_EGPIO_IR_ON, state);
@ -106,29 +115,12 @@ static void h3600_irda_set_speed(struct device *dev, unsigned int speed)
static int h3600_irda_startup(struct device *dev)
{
int err = gpio_request(H3600_EGPIO_IR_ON, "IrDA power");
if (err)
goto err1;
err = gpio_direction_output(H3600_EGPIO_IR_ON, 0);
if (err)
goto err2;
err = gpio_request(H3600_EGPIO_IR_FSEL, "IrDA fsel");
if (err)
goto err2;
err = gpio_direction_output(H3600_EGPIO_IR_FSEL, 0);
if (err)
goto err3;
return 0;
err3: gpio_free(H3600_EGPIO_IR_FSEL);
err2: gpio_free(H3600_EGPIO_IR_ON);
err1: return err;
return gpio_request_array(h3600_irda_gpio, sizeof(h3600_irda_gpio));
}
static void h3600_irda_shutdown(struct device *dev)
{
gpio_free(H3600_EGPIO_IR_ON);
gpio_free(H3600_EGPIO_IR_FSEL);
return gpio_free_array(h3600_irda_gpio, sizeof(h3600_irda_gpio));
}
static struct irda_platform_data h3600_irda_data = {

6
arch/arm/mach-sa1100/include/mach/assabet.h
View File

@ -39,8 +39,8 @@ extern unsigned long SCR_value;
#define ASSABET_BCR_CF_PWR (1<<0) /* Compact Flash Power (1 = 3.3v, 0 = off) */
#define ASSABET_BCR_CF_RST (1<<1) /* Compact Flash Reset (1 = power up reset) */
#define ASSABET_BCR_GFX_RST (1<<1) /* Graphics Accelerator Reset (0 = hold reset) */
#define ASSABET_BCR_CODEC_RST (1<<2) /* 0 = Holds UCB1300, ADI7171, and UDA1341 in reset */
#define ASSABET_BCR_NGFX_RST (1<<1) /* Graphics Accelerator Reset (0 = hold reset) */
#define ASSABET_BCR_NCODEC_RST (1<<2) /* 0 = Holds UCB1300, ADI7171, and UDA1341 in reset */
#define ASSABET_BCR_IRDA_FSEL (1<<3) /* IRDA Frequency select (0 = SIR, 1 = MIR/ FIR) */
#define ASSABET_BCR_IRDA_MD0 (1<<4) /* Range/Power select */
#define ASSABET_BCR_IRDA_MD1 (1<<5) /* Range/Power select */
@ -69,6 +69,8 @@ extern void ASSABET_BCR_frob(unsigned int mask, unsigned int set);
#define ASSABET_BCR_frob(x,y) do { } while (0)
#endif
extern void assabet_uda1341_reset(int set);
#define ASSABET_BCR_set(x) ASSABET_BCR_frob((x), (x))
#define ASSABET_BCR_clear(x) ASSABET_BCR_frob((x), 0)

2
arch/arm/mach-ux500/setup.h
View File

@ -43,7 +43,7 @@ extern void ux500_timer_init(void);
.virtual = IO_ADDRESS(x), \
.pfn = __phys_to_pfn(x), \
.length = sz, \
.type = MT_MEMORY, \
.type = MT_MEMORY_RWX, \
}
extern struct smp_operations ux500_smp_ops;

1
arch/arm/mm/Makefile
View File

@ -12,6 +12,7 @@ ifneq ($(CONFIG_MMU),y)
obj-y += nommu.o
endif
obj-$(CONFIG_ARM_PTDUMP) += dump.o
obj-$(CONFIG_MODULES) += proc-syms.o
obj-$(CONFIG_ALIGNMENT_TRAP) += alignment.o

48
arch/arm/mm/cache-l2x0.c
View File

@ -25,6 +25,7 @@
#include <asm/cacheflush.h>
#include <asm/hardware/cache-l2x0.h>
#include "cache-tauros3.h"
#include "cache-aurora-l2.h"
#define CACHE_LINE_SIZE 32
@ -767,6 +768,14 @@ static void aurora_save(void)
l2x0_saved_regs.aux_ctrl = readl_relaxed(l2x0_base + L2X0_AUX_CTRL);
}
static void __init tauros3_save(void)
{
l2x0_saved_regs.aux2_ctrl =
readl_relaxed(l2x0_base + TAUROS3_AUX2_CTRL);
l2x0_saved_regs.prefetch_ctrl =
readl_relaxed(l2x0_base + L2X0_PREFETCH_CTRL);
}
static void l2x0_resume(void)
{
if (!(readl_relaxed(l2x0_base + L2X0_CTRL) & L2X0_CTRL_EN)) {
@ -821,6 +830,18 @@ static void aurora_resume(void)
}
}
static void tauros3_resume(void)
{
if (!(readl_relaxed(l2x0_base + L2X0_CTRL) & L2X0_CTRL_EN)) {
writel_relaxed(l2x0_saved_regs.aux2_ctrl,
l2x0_base + TAUROS3_AUX2_CTRL);
writel_relaxed(l2x0_saved_regs.prefetch_ctrl,
l2x0_base + L2X0_PREFETCH_CTRL);
}
l2x0_resume();
}
static void __init aurora_broadcast_l2_commands(void)
{
__u32 u;
@ -906,6 +927,15 @@ static const struct l2x0_of_data aurora_no_outer_data = {
},
};
static const struct l2x0_of_data tauros3_data = {
.setup = NULL,
.save = tauros3_save,
/* Tauros3 broadcasts L1 cache operations to L2 */
.outer_cache = {
.resume = tauros3_resume,
},
};
static const struct l2x0_of_data bcm_l2x0_data = {
.setup = pl310_of_setup,
.save = pl310_save,
@ -922,17 +952,19 @@ static const struct l2x0_of_data bcm_l2x0_data = {
};
static const struct of_device_id l2x0_ids[] __initconst = {
{ .compatible = "arm,pl310-cache", .data = (void *)&pl310_data },
{ .compatible = "arm,l220-cache", .data = (void *)&l2x0_data },
{ .compatible = "arm,l210-cache", .data = (void *)&l2x0_data },
{ .compatible = "marvell,aurora-system-cache",
.data = (void *)&aurora_no_outer_data},
{ .compatible = "marvell,aurora-outer-cache",
.data = (void *)&aurora_with_outer_data},
{ .compatible = "brcm,bcm11351-a2-pl310-cache",
.data = (void *)&bcm_l2x0_data},
{ .compatible = "arm,l220-cache", .data = (void *)&l2x0_data },
{ .compatible = "arm,pl310-cache", .data = (void *)&pl310_data },
{ .compatible = "bcm,bcm11351-a2-pl310-cache", /* deprecated name */
.data = (void *)&bcm_l2x0_data},
{ .compatible = "brcm,bcm11351-a2-pl310-cache",
.data = (void *)&bcm_l2x0_data},
{ .compatible = "marvell,aurora-outer-cache",
.data = (void *)&aurora_with_outer_data},
{ .compatible = "marvell,aurora-system-cache",
.data = (void *)&aurora_no_outer_data},
{ .compatible = "marvell,tauros3-cache",
.data = (void *)&tauros3_data },
{}
};

41
arch/arm/mm/cache-tauros3.h Normal file
View File

@ -0,0 +1,41 @@
/*
* Marvell Tauros3 cache controller includes
*
* Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
*
* based on GPL'ed 2.6 kernel sources
* (c) Marvell International Ltd.
*
* 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.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#ifndef __ASM_ARM_HARDWARE_TAUROS3_H
#define __ASM_ARM_HARDWARE_TAUROS3_H
/*
* Marvell Tauros3 L2CC is compatible with PL310 r0p0
* but with PREFETCH_CTRL (r2p0) and an additional event counter.
* Also, there is AUX2_CTRL for some Marvell specific control.
*/
#define TAUROS3_EVENT_CNT2_CFG 0x224
#define TAUROS3_EVENT_CNT2_VAL 0x228
#define TAUROS3_INV_ALL 0x780
#define TAUROS3_CLEAN_ALL 0x784
#define TAUROS3_AUX2_CTRL 0x820
/* Registers shifts and masks */
#define TAUROS3_AUX2_CTRL_LINEFILL_BURST8_EN (1 << 2)
#endif

14
arch/arm/mm/cache-v7.S
View File

@ -146,18 +146,18 @@ flush_levels:
ldr r7, =0x7fff
ands r7, r7, r1, lsr #13 @ extract max number of the index size
loop1:
mov r9, r4 @ create working copy of max way size
mov r9, r7 @ create working copy of max index
loop2:
ARM( orr r11, r10, r9, lsl r5 ) @ factor way and cache number into r11
THUMB( lsl r6, r9, r5 )
ARM( orr r11, r10, r4, lsl r5 ) @ factor way and cache number into r11
THUMB( lsl r6, r4, r5 )
THUMB( orr r11, r10, r6 ) @ factor way and cache number into r11
ARM( orr r11, r11, r7, lsl r2 ) @ factor index number into r11
THUMB( lsl r6, r7, r2 )
ARM( orr r11, r11, r9, lsl r2 ) @ factor index number into r11
THUMB( lsl r6, r9, r2 )
THUMB( orr r11, r11, r6 ) @ factor index number into r11
mcr p15, 0, r11, c7, c14, 2 @ clean & invalidate by set/way
subs r9, r9, #1 @ decrement the way
subs r9, r9, #1 @ decrement the index
bge loop2
subs r7, r7, #1 @ decrement the index
subs r4, r4, #1 @ decrement the way
bge loop1
skip:
add r10, r10, #2 @ increment cache number

41
arch/arm/mm/context.c
View File

@ -36,8 +36,8 @@
* The context ID is used by debuggers and trace logic, and
* should be unique within all running processes.
*
* In big endian operation, the two 32 bit words are swapped if accesed by
* non 64-bit operations.
* In big endian operation, the two 32 bit words are swapped if accessed
* by non-64-bit operations.
*/
#define ASID_FIRST_VERSION (1ULL << ASID_BITS)
#define NUM_USER_ASIDS ASID_FIRST_VERSION
@ -78,20 +78,21 @@ void a15_erratum_get_cpumask(int this_cpu, struct mm_struct *mm,
#endif
#ifdef CONFIG_ARM_LPAE
static void cpu_set_reserved_ttbr0(void)
{
/*
* Set TTBR0 to swapper_pg_dir which contains only global entries. The
* ASID is set to 0.
*/
cpu_set_ttbr(0, __pa(swapper_pg_dir));
isb();
}
/*
* With LPAE, the ASID and page tables are updated atomicly, so there is
* no need for a reserved set of tables (the active ASID tracking prevents
* any issues across a rollover).
*/
#define cpu_set_reserved_ttbr0()
#else
static void cpu_set_reserved_ttbr0(void)
{
u32 ttb;
/* Copy TTBR1 into TTBR0 */
/*
* Copy TTBR1 into TTBR0.
* This points at swapper_pg_dir, which contains only global
* entries so any speculative walks are perfectly safe.
*/
asm volatile(
" mrc p15, 0, %0, c2, c0, 1 @ read TTBR1\n"
" mcr p15, 0, %0, c2, c0, 0 @ set TTBR0\n"
@ -179,6 +180,7 @@ static int is_reserved_asid(u64 asid)
static u64 new_context(struct mm_struct *mm, unsigned int cpu)
{
static u32 cur_idx = 1;
u64 asid = atomic64_read(&mm->context.id);
u64 generation = atomic64_read(&asid_generation);
@ -193,10 +195,13 @@ static u64 new_context(struct mm_struct *mm, unsigned int cpu)
* Allocate a free ASID. If we can't find one, take a
* note of the currently active ASIDs and mark the TLBs
* as requiring flushes. We always count from ASID #1,
* as we reserve ASID #0 to switch via TTBR0 and indicate
* rollover events.
* as we reserve ASID #0 to switch via TTBR0 and to
* avoid speculative page table walks from hitting in
* any partial walk caches, which could be populated
* from overlapping level-1 descriptors used to map both
* the module area and the userspace stack.
*/
asid = find_next_zero_bit(asid_map, NUM_USER_ASIDS, 1);
asid = find_next_zero_bit(asid_map, NUM_USER_ASIDS, cur_idx);
if (asid == NUM_USER_ASIDS) {
generation = atomic64_add_return(ASID_FIRST_VERSION,
&asid_generation);
@ -204,6 +209,7 @@ static u64 new_context(struct mm_struct *mm, unsigned int cpu)
asid = find_next_zero_bit(asid_map, NUM_USER_ASIDS, 1);
}
__set_bit(asid, asid_map);
cur_idx = asid;
asid |= generation;
cpumask_clear(mm_cpumask(mm));
}
@ -221,8 +227,9 @@ void check_and_switch_context(struct mm_struct *mm, struct task_struct *tsk)
__check_vmalloc_seq(mm);
/*
* Required during context switch to avoid speculative page table
* walking with the wrong TTBR.
* We cannot update the pgd and the ASID atomicly with classic
* MMU, so switch exclusively to global mappings to avoid
* speculative page table walking with the wrong TTBR.
*/
cpu_set_reserved_ttbr0();

6
arch/arm/mm/dma-mapping.c
View File

@ -376,7 +376,7 @@ void __init init_dma_coherent_pool_size(unsigned long size)
static int __init atomic_pool_init(void)
{
struct dma_pool *pool = &atomic_pool;
pgprot_t prot = pgprot_dmacoherent(pgprot_kernel);
pgprot_t prot = pgprot_dmacoherent(PAGE_KERNEL);
gfp_t gfp = GFP_KERNEL | GFP_DMA;
unsigned long nr_pages = pool->size >> PAGE_SHIFT;
unsigned long *bitmap;
@ -624,7 +624,7 @@ static void __free_from_contiguous(struct device *dev, struct page *page,
if (PageHighMem(page))
__dma_free_remap(cpu_addr, size);
else
__dma_remap(page, size, pgprot_kernel);
__dma_remap(page, size, PAGE_KERNEL);
dma_release_from_contiguous(dev, page, size >> PAGE_SHIFT);
}
@ -1351,7 +1351,7 @@ static void __iommu_free_atomic(struct device *dev, void *cpu_addr,
static void *arm_iommu_alloc_attrs(struct device *dev, size_t size,
dma_addr_t *handle, gfp_t gfp, struct dma_attrs *attrs)
{
pgprot_t prot = __get_dma_pgprot(attrs, pgprot_kernel);
pgprot_t prot = __get_dma_pgprot(attrs, PAGE_KERNEL);
struct page **pages;
void *addr = NULL;

345
arch/arm/mm/dump.c Normal file
View File

@ -0,0 +1,345 @@
/*
* Debug helper to dump the current kernel pagetables of the system
* so that we can see what the various memory ranges are set to.
*
* Derived from x86 implementation:
* (C) Copyright 2008 Intel Corporation
*
* Author: Arjan van de Ven <arjan@linux.intel.com>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; version 2
* of the License.
*/
#include <linux/debugfs.h>
#include <linux/fs.h>
#include <linux/mm.h>
#include <linux/seq_file.h>
#include <asm/fixmap.h>
#include <asm/pgtable.h>
struct addr_marker {
unsigned long start_address;
const char *name;
};
static struct addr_marker address_markers[] = {
{ MODULES_VADDR, "Modules" },
{ PAGE_OFFSET, "Kernel Mapping" },
{ 0, "vmalloc() Area" },
{ VMALLOC_END, "vmalloc() End" },
{ FIXADDR_START, "Fixmap Area" },
{ CONFIG_VECTORS_BASE, "Vectors" },
{ CONFIG_VECTORS_BASE + PAGE_SIZE * 2, "Vectors End" },
{ -1, NULL },
};
struct pg_state {
struct seq_file *seq;
const struct addr_marker *marker;
unsigned long start_address;
unsigned level;
u64 current_prot;
};
struct prot_bits {
u64 mask;
u64 val;
const char *set;
const char *clear;
};
static const struct prot_bits pte_bits[] = {
{
.mask = L_PTE_USER,
.val = L_PTE_USER,
.set = "USR",
.clear = " ",
}, {
.mask = L_PTE_RDONLY,
.val = L_PTE_RDONLY,
.set = "ro",
.clear = "RW",
}, {
.mask = L_PTE_XN,
.val = L_PTE_XN,
.set = "NX",
.clear = "x ",
}, {
.mask = L_PTE_SHARED,
.val = L_PTE_SHARED,
.set = "SHD",
.clear = " ",
}, {
.mask = L_PTE_MT_MASK,
.val = L_PTE_MT_UNCACHED,
.set = "SO/UNCACHED",
}, {
.mask = L_PTE_MT_MASK,
.val = L_PTE_MT_BUFFERABLE,
.set = "MEM/BUFFERABLE/WC",
}, {
.mask = L_PTE_MT_MASK,
.val = L_PTE_MT_WRITETHROUGH,
.set = "MEM/CACHED/WT",
}, {
.mask = L_PTE_MT_MASK,
.val = L_PTE_MT_WRITEBACK,
.set = "MEM/CACHED/WBRA",
#ifndef CONFIG_ARM_LPAE
}, {
.mask = L_PTE_MT_MASK,
.val = L_PTE_MT_MINICACHE,
.set = "MEM/MINICACHE",
#endif
}, {
.mask = L_PTE_MT_MASK,
.val = L_PTE_MT_WRITEALLOC,
.set = "MEM/CACHED/WBWA",
}, {
.mask = L_PTE_MT_MASK,
.val = L_PTE_MT_DEV_SHARED,
.set = "DEV/SHARED",
#ifndef CONFIG_ARM_LPAE
}, {
.mask = L_PTE_MT_MASK,
.val = L_PTE_MT_DEV_NONSHARED,
.set = "DEV/NONSHARED",
#endif
}, {
.mask = L_PTE_MT_MASK,
.val = L_PTE_MT_DEV_WC,
.set = "DEV/WC",
}, {
.mask = L_PTE_MT_MASK,
.val = L_PTE_MT_DEV_CACHED,
.set = "DEV/CACHED",
},
};
static const struct prot_bits section_bits[] = {
#ifndef CONFIG_ARM_LPAE
/* These are approximate */
{
.mask = PMD_SECT_AP_READ | PMD_SECT_AP_WRITE,
.val = 0,
.set = " ro",
}, {
.mask = PMD_SECT_AP_READ | PMD_SECT_AP_WRITE,
.val = PMD_SECT_AP_WRITE,
.set = " RW",
}, {
.mask = PMD_SECT_AP_READ | PMD_SECT_AP_WRITE,
.val = PMD_SECT_AP_READ,
.set = "USR ro",
}, {
.mask = PMD_SECT_AP_READ | PMD_SECT_AP_WRITE,
.val = PMD_SECT_AP_READ | PMD_SECT_AP_WRITE,
.set = "USR RW",
#else
{
.mask = PMD_SECT_USER,
.val = PMD_SECT_USER,
.set = "USR",
}, {
.mask = PMD_SECT_RDONLY,
.val = PMD_SECT_RDONLY,
.set = "ro",
.clear = "RW",
#endif
}, {
.mask = PMD_SECT_XN,
.val = PMD_SECT_XN,
.set = "NX",
.clear = "x ",
}, {
.mask = PMD_SECT_S,
.val = PMD_SECT_S,
.set = "SHD",
.clear = " ",
},
};
struct pg_level {
const struct prot_bits *bits;
size_t num;
u64 mask;
};
static struct pg_level pg_level[] = {
{
}, { /* pgd */
}, { /* pud */
}, { /* pmd */
.bits = section_bits,
.num = ARRAY_SIZE(section_bits),
}, { /* pte */
.bits = pte_bits,
.num = ARRAY_SIZE(pte_bits),
},
};
static void dump_prot(struct pg_state *st, const struct prot_bits *bits, size_t num)
{
unsigned i;
for (i = 0; i < num; i++, bits++) {
const char *s;
if ((st->current_prot & bits->mask) == bits->val)
s = bits->set;
else
s = bits->clear;
if (s)
seq_printf(st->seq, " %s", s);
}
}
static void note_page(struct pg_state *st, unsigned long addr, unsigned level, u64 val)
{
static const char units[] = "KMGTPE";
u64 prot = val & pg_level[level].mask;
if (addr < USER_PGTABLES_CEILING)
return;
if (!st->level) {
st->level = level;
st->current_prot = prot;
seq_printf(st->seq, "---[ %s ]---\n", st->marker->name);
} else if (prot != st->current_prot || level != st->level ||
addr >= st->marker[1].start_address) {
const char *unit = units;
unsigned long delta;
if (st->current_prot) {
seq_printf(st->seq, "0x%08lx-0x%08lx ",
st->start_address, addr);
delta = (addr - st->start_address) >> 10;
while (!(delta & 1023) && unit[1]) {
delta >>= 10;
unit++;
}
seq_printf(st->seq, "%9lu%c", delta, *unit);
if (pg_level[st->level].bits)
dump_prot(st, pg_level[st->level].bits, pg_level[st->level].num);
seq_printf(st->seq, "\n");
}
if (addr >= st->marker[1].start_address) {
st->marker++;
seq_printf(st->seq, "---[ %s ]---\n", st->marker->name);
}
st->start_address = addr;
st->current_prot = prot;
st->level = level;
}
}
static void walk_pte(struct pg_state *st, pmd_t *pmd, unsigned long start)
{
pte_t *pte = pte_offset_kernel(pmd, 0);
unsigned long addr;
unsigned i;
for (i = 0; i < PTRS_PER_PTE; i++, pte++) {
addr = start + i * PAGE_SIZE;
note_page(st, addr, 4, pte_val(*pte));
}
}
static void walk_pmd(struct pg_state *st, pud_t *pud, unsigned long start)
{
pmd_t *pmd = pmd_offset(pud, 0);
unsigned long addr;
unsigned i;
for (i = 0; i < PTRS_PER_PMD; i++, pmd++) {
addr = start + i * PMD_SIZE;
if (pmd_none(*pmd) || pmd_large(*pmd) || !pmd_present(*pmd))
note_page(st, addr, 3, pmd_val(*pmd));
else
walk_pte(st, pmd, addr);
}
}
static void walk_pud(struct pg_state *st, pgd_t *pgd, unsigned long start)
{
pud_t *pud = pud_offset(pgd, 0);
unsigned long addr;
unsigned i;
for (i = 0; i < PTRS_PER_PUD; i++, pud++) {
addr = start + i * PUD_SIZE;
if (!pud_none(*pud)) {
walk_pmd(st, pud, addr);
} else {
note_page(st, addr, 2, pud_val(*pud));
}
}
}
static void walk_pgd(struct seq_file *m)
{
pgd_t *pgd = swapper_pg_dir;
struct pg_state st;
unsigned long addr;
unsigned i, pgdoff = USER_PGTABLES_CEILING / PGDIR_SIZE;
memset(&st, 0, sizeof(st));
st.seq = m;
st.marker = address_markers;
pgd += pgdoff;
for (i = pgdoff; i < PTRS_PER_PGD; i++, pgd++) {
addr = i * PGDIR_SIZE;
if (!pgd_none(*pgd)) {
walk_pud(&st, pgd, addr);
} else {
note_page(&st, addr, 1, pgd_val(*pgd));
}
}
note_page(&st, 0, 0, 0);
}
static int ptdump_show(struct seq_file *m, void *v)
{
walk_pgd(m);
return 0;
}
static int ptdump_open(struct inode *inode, struct file *file)
{
return single_open(file, ptdump_show, NULL);
}
static const struct file_operations ptdump_fops = {
.open = ptdump_open,
.read = seq_read,
.llseek = seq_lseek,
.release = single_release,
};
static int ptdump_init(void)
{
struct dentry *pe;
unsigned i, j;
for (i = 0; i < ARRAY_SIZE(pg_level); i++)
if (pg_level[i].bits)
for (j = 0; j < pg_level[i].num; j++)
pg_level[i].mask |= pg_level[i].bits[j].mask;
address_markers[2].start_address = VMALLOC_START;
pe = debugfs_create_file("kernel_page_tables", 0400, NULL, NULL,
&ptdump_fops);
return pe ? 0 : -ENOMEM;
}
__initcall(ptdump_init);

62
arch/arm/mm/init.c
View File

@ -142,58 +142,6 @@ static void __init find_limits(unsigned long *min, unsigned long *max_low,
*max_high = bank_pfn_end(&mi->bank[mi->nr_banks - 1]);
}
static void __init arm_bootmem_init(unsigned long start_pfn,
unsigned long end_pfn)
{
struct memblock_region *reg;
unsigned int boot_pages;
phys_addr_t bitmap;
pg_data_t *pgdat;
/*
* Allocate the bootmem bitmap page. This must be in a region
* of memory which has already been mapped.
*/
boot_pages = bootmem_bootmap_pages(end_pfn - start_pfn);
bitmap = memblock_alloc_base(boot_pages << PAGE_SHIFT, L1_CACHE_BYTES,
__pfn_to_phys(end_pfn));
/*
* Initialise the bootmem allocator, handing the
* memory banks over to bootmem.
*/
node_set_online(0);
pgdat = NODE_DATA(0);
init_bootmem_node(pgdat, __phys_to_pfn(bitmap), start_pfn, end_pfn);
/* Free the lowmem regions from memblock into bootmem. */
for_each_memblock(memory, reg) {
unsigned long start = memblock_region_memory_base_pfn(reg);
unsigned long end = memblock_region_memory_end_pfn(reg);
if (end >= end_pfn)
end = end_pfn;
if (start >= end)
break;
free_bootmem(__pfn_to_phys(start), (end - start) << PAGE_SHIFT);
}
/* Reserve the lowmem memblock reserved regions in bootmem. */
for_each_memblock(reserved, reg) {
unsigned long start = memblock_region_reserved_base_pfn(reg);
unsigned long end = memblock_region_reserved_end_pfn(reg);
if (end >= end_pfn)
end = end_pfn;
if (start >= end)
break;
reserve_bootmem(__pfn_to_phys(start),
(end - start) << PAGE_SHIFT, BOOTMEM_DEFAULT);
}
}
#ifdef CONFIG_ZONE_DMA
phys_addr_t arm_dma_zone_size __read_mostly;
@ -233,7 +181,7 @@ void __init setup_dma_zone(const struct machine_desc *mdesc)
#endif
}
static void __init arm_bootmem_free(unsigned long min, unsigned long max_low,
static void __init zone_sizes_init(unsigned long min, unsigned long max_low,
unsigned long max_high)
{
unsigned long zone_size[MAX_NR_ZONES], zhole_size[MAX_NR_ZONES];
@ -381,7 +329,6 @@ void __init arm_memblock_init(struct meminfo *mi,
dma_contiguous_reserve(min(arm_dma_limit, arm_lowmem_limit));
arm_memblock_steal_permitted = false;
memblock_allow_resize();
memblock_dump_all();
}
@ -389,12 +336,11 @@ void __init bootmem_init(void)
{
unsigned long min, max_low, max_high;
memblock_allow_resize();
max_low = max_high = 0;
find_limits(&min, &max_low, &max_high);
arm_bootmem_init(min, max_low);
/*
* Sparsemem tries to allocate bootmem in memory_present(),
* so must be done after the fixed reservations
@ -411,7 +357,7 @@ void __init bootmem_init(void)
* the sparse mem_map arrays initialized by sparse_init()
* for memmap_init_zone(), otherwise all PFNs are invalid.
*/
arm_bootmem_free(min, max_low, max_high);
zone_sizes_init(min, max_low, max_high);
/*
* This doesn't seem to be used by the Linux memory manager any
@ -584,7 +530,7 @@ void __init mem_init(void)
extern u32 itcm_end;
#endif
max_mapnr = pfn_to_page(max_pfn + PHYS_PFN_OFFSET) - mem_map;
set_max_mapnr(pfn_to_page(max_pfn) - mem_map);
/* this will put all unused low memory onto the freelists */
free_unused_memmap(&meminfo);

4
arch/arm/mm/ioremap.c
View File

@ -392,9 +392,9 @@ __arm_ioremap_exec(phys_addr_t phys_addr, size_t size, bool cached)
unsigned int mtype;
if (cached)
mtype = MT_MEMORY;
mtype = MT_MEMORY_RWX;
else
mtype = MT_MEMORY_NONCACHED;
mtype = MT_MEMORY_RWX_NONCACHED;
return __arm_ioremap_caller(phys_addr, size, mtype,
__builtin_return_address(0));

126
arch/arm/mm/mmu.c
View File

@ -22,6 +22,7 @@
#include <asm/cputype.h>
#include <asm/sections.h>
#include <asm/cachetype.h>
#include <asm/sections.h>
#include <asm/setup.h>
#include <asm/smp_plat.h>
#include <asm/tlb.h>
@ -287,36 +288,43 @@ static struct mem_type mem_types[] = {
.prot_l1 = PMD_TYPE_TABLE,
.domain = DOMAIN_USER,
},
[MT_MEMORY] = {
[MT_MEMORY_RWX] = {
.prot_pte = L_PTE_PRESENT | L_PTE_YOUNG | L_PTE_DIRTY,
.prot_l1 = PMD_TYPE_TABLE,
.prot_sect = PMD_TYPE_SECT | PMD_SECT_AP_WRITE,
.domain = DOMAIN_KERNEL,
},
[MT_MEMORY_RW] = {
.prot_pte = L_PTE_PRESENT | L_PTE_YOUNG | L_PTE_DIRTY |
L_PTE_XN,
.prot_l1 = PMD_TYPE_TABLE,
.prot_sect = PMD_TYPE_SECT | PMD_SECT_AP_WRITE,
.domain = DOMAIN_KERNEL,
},
[MT_ROM] = {
.prot_sect = PMD_TYPE_SECT,
.domain = DOMAIN_KERNEL,
},
[MT_MEMORY_NONCACHED] = {
[MT_MEMORY_RWX_NONCACHED] = {
.prot_pte = L_PTE_PRESENT | L_PTE_YOUNG | L_PTE_DIRTY |
L_PTE_MT_BUFFERABLE,
.prot_l1 = PMD_TYPE_TABLE,
.prot_sect = PMD_TYPE_SECT | PMD_SECT_AP_WRITE,
.domain = DOMAIN_KERNEL,
},
[MT_MEMORY_DTCM] = {
[MT_MEMORY_RW_DTCM] = {
.prot_pte = L_PTE_PRESENT | L_PTE_YOUNG | L_PTE_DIRTY |
L_PTE_XN,
.prot_l1 = PMD_TYPE_TABLE,
.prot_sect = PMD_TYPE_SECT | PMD_SECT_XN,
.domain = DOMAIN_KERNEL,
},
[MT_MEMORY_ITCM] = {
[MT_MEMORY_RWX_ITCM] = {
.prot_pte = L_PTE_PRESENT | L_PTE_YOUNG | L_PTE_DIRTY,
.prot_l1 = PMD_TYPE_TABLE,
.domain = DOMAIN_KERNEL,
},
[MT_MEMORY_SO] = {
[MT_MEMORY_RW_SO] = {
.prot_pte = L_PTE_PRESENT | L_PTE_YOUNG | L_PTE_DIRTY |
L_PTE_MT_UNCACHED | L_PTE_XN,
.prot_l1 = PMD_TYPE_TABLE,
@ -325,7 +333,8 @@ static struct mem_type mem_types[] = {
.domain = DOMAIN_KERNEL,
},
[MT_MEMORY_DMA_READY] = {
.prot_pte = L_PTE_PRESENT | L_PTE_YOUNG | L_PTE_DIRTY,
.prot_pte = L_PTE_PRESENT | L_PTE_YOUNG | L_PTE_DIRTY |
L_PTE_XN,
.prot_l1 = PMD_TYPE_TABLE,
.domain = DOMAIN_KERNEL,
},
@ -337,6 +346,44 @@ const struct mem_type *get_mem_type(unsigned int type)
}
EXPORT_SYMBOL(get_mem_type);
#define PTE_SET_FN(_name, pteop) \
static int pte_set_##_name(pte_t *ptep, pgtable_t token, unsigned long addr, \
void *data) \
{ \
pte_t pte = pteop(*ptep); \
\
set_pte_ext(ptep, pte, 0); \
return 0; \
} \
#define SET_MEMORY_FN(_name, callback) \
int set_memory_##_name(unsigned long addr, int numpages) \
{ \
unsigned long start = addr; \
unsigned long size = PAGE_SIZE*numpages; \
unsigned end = start + size; \
\
if (start < MODULES_VADDR || start >= MODULES_END) \
return -EINVAL;\
\
if (end < MODULES_VADDR || end >= MODULES_END) \
return -EINVAL; \
\
apply_to_page_range(&init_mm, start, size, callback, NULL); \
flush_tlb_kernel_range(start, end); \
return 0;\
}
PTE_SET_FN(ro, pte_wrprotect)
PTE_SET_FN(rw, pte_mkwrite)
PTE_SET_FN(x, pte_mkexec)
PTE_SET_FN(nx, pte_mknexec)
SET_MEMORY_FN(ro, pte_set_ro)
SET_MEMORY_FN(rw, pte_set_rw)
SET_MEMORY_FN(x, pte_set_x)
SET_MEMORY_FN(nx, pte_set_nx)
/*
* Adjust the PMD section entries according to the CPU in use.
*/
@ -410,6 +457,9 @@ static void __init build_mem_type_table(void)
mem_types[MT_DEVICE_NONSHARED].prot_sect |= PMD_SECT_XN;
mem_types[MT_DEVICE_CACHED].prot_sect |= PMD_SECT_XN;
mem_types[MT_DEVICE_WC].prot_sect |= PMD_SECT_XN;
/* Also setup NX memory mapping */
mem_types[MT_MEMORY_RW].prot_sect |= PMD_SECT_XN;
}
if (cpu_arch >= CPU_ARCH_ARMv7 && (cr & CR_TRE)) {
/*
@ -487,11 +537,13 @@ static void __init build_mem_type_table(void)
mem_types[MT_DEVICE_WC].prot_pte |= L_PTE_SHARED;
mem_types[MT_DEVICE_CACHED].prot_sect |= PMD_SECT_S;
mem_types[MT_DEVICE_CACHED].prot_pte |= L_PTE_SHARED;
mem_types[MT_MEMORY].prot_sect |= PMD_SECT_S;
mem_types[MT_MEMORY].prot_pte |= L_PTE_SHARED;
mem_types[MT_MEMORY_RWX].prot_sect |= PMD_SECT_S;
mem_types[MT_MEMORY_RWX].prot_pte |= L_PTE_SHARED;
mem_types[MT_MEMORY_RW].prot_sect |= PMD_SECT_S;
mem_types[MT_MEMORY_RW].prot_pte |= L_PTE_SHARED;
mem_types[MT_MEMORY_DMA_READY].prot_pte |= L_PTE_SHARED;
mem_types[MT_MEMORY_NONCACHED].prot_sect |= PMD_SECT_S;
mem_types[MT_MEMORY_NONCACHED].prot_pte |= L_PTE_SHARED;
mem_types[MT_MEMORY_RWX_NONCACHED].prot_sect |= PMD_SECT_S;
mem_types[MT_MEMORY_RWX_NONCACHED].prot_pte |= L_PTE_SHARED;
}
}
@ -502,15 +554,15 @@ static void __init build_mem_type_table(void)
if (cpu_arch >= CPU_ARCH_ARMv6) {
if (cpu_arch >= CPU_ARCH_ARMv7 && (cr & CR_TRE)) {
/* Non-cacheable Normal is XCB = 001 */
mem_types[MT_MEMORY_NONCACHED].prot_sect |=
mem_types[MT_MEMORY_RWX_NONCACHED].prot_sect |=
PMD_SECT_BUFFERED;
} else {
/* For both ARMv6 and non-TEX-remapping ARMv7 */
mem_types[MT_MEMORY_NONCACHED].prot_sect |=
mem_types[MT_MEMORY_RWX_NONCACHED].prot_sect |=
PMD_SECT_TEX(1);
}
} else {
mem_types[MT_MEMORY_NONCACHED].prot_sect |= PMD_SECT_BUFFERABLE;
mem_types[MT_MEMORY_RWX_NONCACHED].prot_sect |= PMD_SECT_BUFFERABLE;
}
#ifdef CONFIG_ARM_LPAE
@ -543,10 +595,12 @@ static void __init build_mem_type_table(void)
mem_types[MT_LOW_VECTORS].prot_l1 |= ecc_mask;
mem_types[MT_HIGH_VECTORS].prot_l1 |= ecc_mask;
mem_types[MT_MEMORY].prot_sect |= ecc_mask | cp->pmd;
mem_types[MT_MEMORY].prot_pte |= kern_pgprot;
mem_types[MT_MEMORY_RWX].prot_sect |= ecc_mask | cp->pmd;
mem_types[MT_MEMORY_RWX].prot_pte |= kern_pgprot;
mem_types[MT_MEMORY_RW].prot_sect |= ecc_mask | cp->pmd;
mem_types[MT_MEMORY_RW].prot_pte |= kern_pgprot;
mem_types[MT_MEMORY_DMA_READY].prot_pte |= kern_pgprot;
mem_types[MT_MEMORY_NONCACHED].prot_sect |= ecc_mask;
mem_types[MT_MEMORY_RWX_NONCACHED].prot_sect |= ecc_mask;
mem_types[MT_ROM].prot_sect |= cp->pmd;
switch (cp->pmd) {
@ -1296,6 +1350,8 @@ static void __init kmap_init(void)
static void __init map_lowmem(void)
{
struct memblock_region *reg;
unsigned long kernel_x_start = round_down(__pa(_stext), SECTION_SIZE);
unsigned long kernel_x_end = round_up(__pa(__init_end), SECTION_SIZE);
/* Map all the lowmem memory banks. */
for_each_memblock(memory, reg) {
@ -1308,12 +1364,40 @@ static void __init map_lowmem(void)
if (start >= end)
break;
map.pfn = __phys_to_pfn(start);
map.virtual = __phys_to_virt(start);
map.length = end - start;
map.type = MT_MEMORY;
if (end < kernel_x_start || start >= kernel_x_end) {
map.pfn = __phys_to_pfn(start);
map.virtual = __phys_to_virt(start);
map.length = end - start;
map.type = MT_MEMORY_RWX;
create_mapping(&map);
create_mapping(&map);
} else {
/* This better cover the entire kernel */
if (start < kernel_x_start) {
map.pfn = __phys_to_pfn(start);
map.virtual = __phys_to_virt(start);
map.length = kernel_x_start - start;
map.type = MT_MEMORY_RW;
create_mapping(&map);
}
map.pfn = __phys_to_pfn(kernel_x_start);
map.virtual = __phys_to_virt(kernel_x_start);
map.length = kernel_x_end - kernel_x_start;
map.type = MT_MEMORY_RWX;
create_mapping(&map);
if (kernel_x_end < end) {
map.pfn = __phys_to_pfn(kernel_x_end);
map.virtual = __phys_to_virt(kernel_x_end);
map.length = end - kernel_x_end;
map.type = MT_MEMORY_RW;
create_mapping(&map);
}
}
}
}

2
arch/arm/mm/pgd.c
View File

@ -23,7 +23,7 @@
#define __pgd_alloc() kmalloc(PTRS_PER_PGD * sizeof(pgd_t), GFP_KERNEL)
#define __pgd_free(pgd) kfree(pgd)
#else
#define __pgd_alloc() (pgd_t *)__get_free_pages(GFP_KERNEL, 2)
#define __pgd_alloc() (pgd_t *)__get_free_pages(GFP_KERNEL | __GFP_REPEAT, 2)
#define __pgd_free(pgd) free_pages((unsigned long)pgd, 2)
#endif

213
drivers/amba/bus.c
View File

@ -83,162 +83,6 @@ static struct device_attribute amba_dev_attrs[] = {
__ATTR_NULL,
};
#ifdef CONFIG_PM_SLEEP
static int amba_legacy_suspend(struct device *dev, pm_message_t mesg)
{
struct amba_driver *adrv = to_amba_driver(dev->driver);
struct amba_device *adev = to_amba_device(dev);
int ret = 0;
if (dev->driver && adrv->suspend)
ret = adrv->suspend(adev, mesg);
return ret;
}
static int amba_legacy_resume(struct device *dev)
{
struct amba_driver *adrv = to_amba_driver(dev->driver);
struct amba_device *adev = to_amba_device(dev);
int ret = 0;
if (dev->driver && adrv->resume)
ret = adrv->resume(adev);
return ret;
}
#endif /* CONFIG_PM_SLEEP */
#ifdef CONFIG_SUSPEND
static int amba_pm_suspend(struct device *dev)
{
struct device_driver *drv = dev->driver;
int ret = 0;
if (!drv)
return 0;
if (drv->pm) {
if (drv->pm->suspend)
ret = drv->pm->suspend(dev);
} else {
ret = amba_legacy_suspend(dev, PMSG_SUSPEND);
}
return ret;
}
static int amba_pm_resume(struct device *dev)
{
struct device_driver *drv = dev->driver;
int ret = 0;
if (!drv)
return 0;
if (drv->pm) {
if (drv->pm->resume)
ret = drv->pm->resume(dev);
} else {
ret = amba_legacy_resume(dev);
}
return ret;
}
#else /* !CONFIG_SUSPEND */
#define amba_pm_suspend NULL
#define amba_pm_resume NULL
#endif /* !CONFIG_SUSPEND */
#ifdef CONFIG_HIBERNATE_CALLBACKS
static int amba_pm_freeze(struct device *dev)
{
struct device_driver *drv = dev->driver;
int ret = 0;
if (!drv)
return 0;
if (drv->pm) {
if (drv->pm->freeze)
ret = drv->pm->freeze(dev);
} else {
ret = amba_legacy_suspend(dev, PMSG_FREEZE);
}
return ret;
}
static int amba_pm_thaw(struct device *dev)
{
struct device_driver *drv = dev->driver;
int ret = 0;
if (!drv)
return 0;
if (drv->pm) {
if (drv->pm->thaw)
ret = drv->pm->thaw(dev);
} else {
ret = amba_legacy_resume(dev);
}
return ret;
}
static int amba_pm_poweroff(struct device *dev)
{
struct device_driver *drv = dev->driver;
int ret = 0;
if (!drv)
return 0;
if (drv->pm) {
if (drv->pm->poweroff)
ret = drv->pm->poweroff(dev);
} else {
ret = amba_legacy_suspend(dev, PMSG_HIBERNATE);
}
return ret;
}
static int amba_pm_restore(struct device *dev)
{
struct device_driver *drv = dev->driver;
int ret = 0;
if (!drv)
return 0;
if (drv->pm) {
if (drv->pm->restore)
ret = drv->pm->restore(dev);
} else {
ret = amba_legacy_resume(dev);
}
return ret;
}
#else /* !CONFIG_HIBERNATE_CALLBACKS */
#define amba_pm_freeze NULL
#define amba_pm_thaw NULL
#define amba_pm_poweroff NULL
#define amba_pm_restore NULL
#endif /* !CONFIG_HIBERNATE_CALLBACKS */
#ifdef CONFIG_PM_RUNTIME
/*
* Hooks to provide runtime PM of the pclk (bus clock). It is safe to
@ -251,7 +95,7 @@ static int amba_pm_runtime_suspend(struct device *dev)
int ret = pm_generic_runtime_suspend(dev);
if (ret == 0 && dev->driver)
clk_disable(pcdev->pclk);
clk_disable_unprepare(pcdev->pclk);
return ret;
}
@ -262,7 +106,7 @@ static int amba_pm_runtime_resume(struct device *dev)
int ret;
if (dev->driver) {
ret = clk_enable(pcdev->pclk);
ret = clk_prepare_enable(pcdev->pclk);
/* Failure is probably fatal to the system, but... */
if (ret)
return ret;
@ -272,15 +116,13 @@ static int amba_pm_runtime_resume(struct device *dev)
}
#endif
#ifdef CONFIG_PM
static const struct dev_pm_ops amba_pm = {
.suspend = amba_pm_suspend,
.resume = amba_pm_resume,
.freeze = amba_pm_freeze,
.thaw = amba_pm_thaw,
.poweroff = amba_pm_poweroff,
.restore = amba_pm_restore,
.suspend = pm_generic_suspend,
.resume = pm_generic_resume,
.freeze = pm_generic_freeze,
.thaw = pm_generic_thaw,
.poweroff = pm_generic_poweroff,
.restore = pm_generic_restore,
SET_RUNTIME_PM_OPS(
amba_pm_runtime_suspend,
amba_pm_runtime_resume,
@ -288,14 +130,6 @@ static const struct dev_pm_ops amba_pm = {
)
};
#define AMBA_PM (&amba_pm)
#else /* !CONFIG_PM */
#define AMBA_PM NULL
#endif /* !CONFIG_PM */
/*
* Primecells are part of the Advanced Microcontroller Bus Architecture,
* so we call the bus "amba".
@ -305,7 +139,7 @@ struct bus_type amba_bustype = {
.dev_attrs = amba_dev_attrs,
.match = amba_match,
.uevent = amba_uevent,
.pm = AMBA_PM,
.pm = &amba_pm,
};
static int __init amba_init(void)
@ -317,36 +151,23 @@ postcore_initcall(amba_init);
static int amba_get_enable_pclk(struct amba_device *pcdev)
{
struct clk *pclk = clk_get(&pcdev->dev, "apb_pclk");
int ret;
pcdev->pclk = pclk;
pcdev->pclk = clk_get(&pcdev->dev, "apb_pclk");
if (IS_ERR(pcdev->pclk))
return PTR_ERR(pcdev->pclk);
if (IS_ERR(pclk))
return PTR_ERR(pclk);
ret = clk_prepare(pclk);
if (ret) {
clk_put(pclk);
return ret;
}
ret = clk_enable(pclk);
if (ret) {
clk_unprepare(pclk);
clk_put(pclk);
}
ret = clk_prepare_enable(pcdev->pclk);
if (ret)
clk_put(pcdev->pclk);
return ret;
}
static void amba_put_disable_pclk(struct amba_device *pcdev)
{
struct clk *pclk = pcdev->pclk;
clk_disable(pclk);
clk_unprepare(pclk);
clk_put(pclk);
clk_disable_unprepare(pcdev->pclk);
clk_put(pcdev->pclk);
}
/*

2
drivers/input/serio/ambakmi.c
View File

@ -167,8 +167,6 @@ static int amba_kmi_remove(struct amba_device *dev)
{
struct amba_kmi_port *kmi = amba_get_drvdata(dev);
amba_set_drvdata(dev, NULL);
serio_unregister_port(kmi->io);
clk_put(kmi->clk);
iounmap(kmi->base);

2
drivers/mmc/host/mmci.c
View File

@ -1683,8 +1683,6 @@ static int mmci_remove(struct amba_device *dev)
{
struct mmc_host *mmc = amba_get_drvdata(dev);
amba_set_drvdata(dev, NULL);
if (mmc) {
struct mmci_host *host = mmc_priv(mmc);