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Merge branch 'for-airlied' of git://people.freedesktop.org/~danvet/drm-intel into drm-next

Browse Source 
Last pile of stuff for 3.7, essentially just a bunch of bigger fixes and a
few less intrusive features:

- cpu freq interface in sysfs from Ben
- cpu edp fixes and some related cleanups
- write-combining ptes for pre-gen6 (Chris)
- basic CADL support (Peter Wu), this fixes quite a few issues with
  backlights ...
- rework of the gem backing pages handling (preps for stolen mem handling)
  from Chris
- some more cleanup-fallout from the modeset-rework

On top of that I've done a backmerge of -rc7(since the conflicts got too
messy and I've pushed out broken merged trees too often). I've also
included 3 fixes on top of what QA beat on:

- Fix for a infoframe handling regression in 3.5 - infoframe blows up too
  often and 3.6 is pretty much done, so I'd like to merge that through
  -next and the stable process and give it more exposure before it lands
  in a stable tree.
- ioctl cosmetics^Wspelling fix in the structs (userspace won't be
  affected, since all existing userspace uses private copies of the ioctl
  struct definitions, and the struct layout itself is abi compatible).
- Bugfix for a regression introduced in this pull's testing cycle.

* 'for-airlied' of git://people.freedesktop.org/~danvet/drm-intel: (695 commits)
  drm/i915: Wrap external callers to IPS state with appropriate locks
  drm/i915: s/cacheing/caching/
  drm/i915: make sure we write all the DIP data bytes
  drm/i915: BUG() on unexpected HDMI register
  ...
This commit is contained in:
Dave Airlie 2012-10-02 09:19:32 +10:00
commit 8c98449ad3
725 changed files with 6773 additions and 3880 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

12
Documentation/ABI/testing/sysfs-bus-pci
View File

@ -210,3 +210,15 @@ Users:
firmware assigned instance number of the PCI
device that can help in understanding the firmware
intended order of the PCI device.
What: /sys/bus/pci/devices/.../d3cold_allowed
Date: July 2012
Contact: Huang Ying <ying.huang@intel.com>
Description:
d3cold_allowed is bit to control whether the corresponding PCI
device can be put into D3Cold state. If it is cleared, the
device will never be put into D3Cold state. If it is set, the
device may be put into D3Cold state if other requirements are
satisfied too. Reading this attribute will show the current
value of d3cold_allowed bit. Writing this attribute will set
the value of d3cold_allowed bit.

2
Documentation/feature-removal-schedule.txt
View File

@ -579,7 +579,7 @@ Why: KVM tracepoints provide mostly equivalent information in a much more
----------------------------
What: at91-mci driver ("CONFIG_MMC_AT91")
When: 3.7
When: 3.8
Why: There are two mci drivers: at91-mci and atmel-mci. The PDC support
was added to atmel-mci as a first step to support more chips.
Then at91-mci was kept only for old IP versions (on at91rm9200 and

1
Documentation/i2c/busses/i2c-i801
View File

@ -21,6 +21,7 @@ Supported adapters:
* Intel DH89xxCC (PCH)
* Intel Panther Point (PCH)
* Intel Lynx Point (PCH)
* Intel Lynx Point-LP (PCH)
Datasheets: Publicly available at the Intel website
On Intel Patsburg and later chipsets, both the normal host SMBus controller

2
Documentation/watchdog/src/watchdog-test.c
View File

@ -31,7 +31,7 @@ static void keep_alive(void)
* or "-e" to enable the card.
*/
void term(int sig)
static void term(int sig)
{
close(fd);
fprintf(stderr, "Stopping watchdog ticks...\n");

7
MAINTAINERS
View File

@ -3388,7 +3388,7 @@ M: "Wolfram Sang (embedded platforms)" <w.sang@pengutronix.de>
L: linux-i2c@vger.kernel.org
W: http://i2c.wiki.kernel.org/
T: quilt kernel.org/pub/linux/kernel/people/jdelvare/linux-2.6/jdelvare-i2c/
T: git git://git.fluff.org/bjdooks/linux.git
T: git git://git.pengutronix.de/git/wsa/linux.git
S: Maintained
F: Documentation/i2c/
F: drivers/i2c/
@ -3666,11 +3666,12 @@ F: Documentation/networking/README.ipw2200
F: drivers/net/wireless/ipw2x00/
INTEL(R) TRUSTED EXECUTION TECHNOLOGY (TXT)
M: Joseph Cihula <joseph.cihula@intel.com>
M: Richard L Maliszewski <richard.l.maliszewski@intel.com>
M: Gang Wei <gang.wei@intel.com>
M: Shane Wang <shane.wang@intel.com>
L: tboot-devel@lists.sourceforge.net
W: http://tboot.sourceforge.net
T: Mercurial http://www.bughost.org/repos.hg/tboot.hg
T: hg http://tboot.hg.sourceforge.net:8000/hgroot/tboot/tboot
S: Supported
F: Documentation/intel_txt.txt
F: include/linux/tboot.h

4
Makefile
View File

@ -1,8 +1,8 @@
VERSION = 3
PATCHLEVEL = 6
SUBLEVEL = 0
EXTRAVERSION = -rc3
NAME = Saber-toothed Squirrel
EXTRAVERSION = -rc7
NAME = Terrified Chipmunk
# *DOCUMENTATION*
# To see a list of typical targets execute "make help"

2
arch/arm/Kconfig
View File

@ -6,7 +6,7 @@ config ARM
select HAVE_DMA_API_DEBUG
select HAVE_IDE if PCI || ISA || PCMCIA
select HAVE_DMA_ATTRS
select HAVE_DMA_CONTIGUOUS if (CPU_V6 || CPU_V6K || CPU_V7)
select HAVE_DMA_CONTIGUOUS if MMU
select HAVE_MEMBLOCK
select RTC_LIB
select SYS_SUPPORTS_APM_EMULATION

6
arch/arm/Kconfig.debug
View File

@ -356,15 +356,15 @@ choice
is nothing connected to read from the DCC.
config DEBUG_SEMIHOSTING
bool "Kernel low-level debug output via semihosting I"
bool "Kernel low-level debug output via semihosting I/O"
help
Semihosting enables code running on an ARM target to use
the I/O facilities on a host debugger/emulator through a
simple SVC calls. The host debugger or emulator must have
simple SVC call. The host debugger or emulator must have
semihosting enabled for the special svc call to be trapped
otherwise the kernel will crash.
This is known to work with OpenOCD, as wellas
This is known to work with OpenOCD, as well as
ARM's Fast Models, or any other controlling environment
that implements semihosting.

4
arch/arm/Makefile
View File

@ -284,10 +284,10 @@ zImage Image xipImage bootpImage uImage: vmlinux
zinstall uinstall install: vmlinux
$(Q)$(MAKE) $(build)=$(boot) MACHINE=$(MACHINE) $@
%.dtb:
%.dtb: scripts
$(Q)$(MAKE) $(build)=$(boot) MACHINE=$(MACHINE) $(boot)/$@
dtbs:
dtbs: scripts
$(Q)$(MAKE) $(build)=$(boot) MACHINE=$(MACHINE) $(boot)/$@
# We use MRPROPER_FILES and CLEAN_FILES now

5
arch/arm/boot/compressed/head.S
View File

@ -653,16 +653,21 @@ __armv7_mmu_cache_on:
mcrne p15, 0, r0, c8, c7, 0 @ flush I,D TLBs
#endif
mrc p15, 0, r0, c1, c0, 0 @ read control reg
bic r0, r0, #1 << 28 @ clear SCTLR.TRE
orr r0, r0, #0x5000 @ I-cache enable, RR cache replacement
orr r0, r0, #0x003c @ write buffer
#ifdef CONFIG_MMU
#ifdef CONFIG_CPU_ENDIAN_BE8
orr r0, r0, #1 << 25 @ big-endian page tables
#endif
mrcne p15, 0, r6, c2, c0, 2 @ read ttb control reg
orrne r0, r0, #1 @ MMU enabled
movne r1, #0xfffffffd @ domain 0 = client
bic r6, r6, #1 << 31 @ 32-bit translation system
bic r6, r6, #3 << 0 @ use only ttbr0
mcrne p15, 0, r3, c2, c0, 0 @ load page table pointer
mcrne p15, 0, r1, c3, c0, 0 @ load domain access control
mcrne p15, 0, r6, c2, c0, 2 @ load ttb control
#endif
mcr p15, 0, r0, c7, c5, 4 @ ISB
mcr p15, 0, r0, c1, c0, 0 @ load control register

3
arch/arm/boot/dts/at91sam9260.dtsi
View File

@ -104,6 +104,7 @@ pioA: gpio@fffff400 {
#gpio-cells = <2>;
gpio-controller;
interrupt-controller;
#interrupt-cells = <2>;
};
pioB: gpio@fffff600 {
@ -113,6 +114,7 @@ pioB: gpio@fffff600 {
#gpio-cells = <2>;
gpio-controller;
interrupt-controller;
#interrupt-cells = <2>;
};
pioC: gpio@fffff800 {
@ -122,6 +124,7 @@ pioC: gpio@fffff800 {
#gpio-cells = <2>;
gpio-controller;
interrupt-controller;
#interrupt-cells = <2>;
};
dbgu: serial@fffff200 {

5
arch/arm/boot/dts/at91sam9263.dtsi
View File

@ -95,6 +95,7 @@ pioA: gpio@fffff200 {
#gpio-cells = <2>;
gpio-controller;
interrupt-controller;
#interrupt-cells = <2>;
};
pioB: gpio@fffff400 {
@ -104,6 +105,7 @@ pioB: gpio@fffff400 {
#gpio-cells = <2>;
gpio-controller;
interrupt-controller;
#interrupt-cells = <2>;
};
pioC: gpio@fffff600 {
@ -113,6 +115,7 @@ pioC: gpio@fffff600 {
#gpio-cells = <2>;
gpio-controller;
interrupt-controller;
#interrupt-cells = <2>;
};
pioD: gpio@fffff800 {
@ -122,6 +125,7 @@ pioD: gpio@fffff800 {
#gpio-cells = <2>;
gpio-controller;
interrupt-controller;
#interrupt-cells = <2>;
};
pioE: gpio@fffffa00 {
@ -131,6 +135,7 @@ pioE: gpio@fffffa00 {
#gpio-cells = <2>;
gpio-controller;
interrupt-controller;
#interrupt-cells = <2>;
};
dbgu: serial@ffffee00 {

2
arch/arm/boot/dts/at91sam9g25ek.dts
View File

@ -15,7 +15,7 @@ / {
compatible = "atmel,at91sam9g25ek", "atmel,at91sam9x5ek", "atmel,at91sam9x5", "atmel,at91sam9";
chosen {
bootargs = "128M console=ttyS0,115200 root=/dev/mtdblock1 rw rootfstype=ubifs ubi.mtd=1 root=ubi0:rootfs";
bootargs = "console=ttyS0,115200 root=/dev/mtdblock1 rw rootfstype=ubifs ubi.mtd=1 root=ubi0:rootfs";
};
ahb {

5
arch/arm/boot/dts/at91sam9g45.dtsi
View File

@ -113,6 +113,7 @@ pioA: gpio@fffff200 {
#gpio-cells = <2>;
gpio-controller;
interrupt-controller;
#interrupt-cells = <2>;
};
pioB: gpio@fffff400 {
@ -122,6 +123,7 @@ pioB: gpio@fffff400 {
#gpio-cells = <2>;
gpio-controller;
interrupt-controller;
#interrupt-cells = <2>;
};
pioC: gpio@fffff600 {
@ -131,6 +133,7 @@ pioC: gpio@fffff600 {
#gpio-cells = <2>;
gpio-controller;
interrupt-controller;
#interrupt-cells = <2>;
};
pioD: gpio@fffff800 {
@ -140,6 +143,7 @@ pioD: gpio@fffff800 {
#gpio-cells = <2>;
gpio-controller;
interrupt-controller;
#interrupt-cells = <2>;
};
pioE: gpio@fffffa00 {
@ -149,6 +153,7 @@ pioE: gpio@fffffa00 {
#gpio-cells = <2>;
gpio-controller;
interrupt-controller;
#interrupt-cells = <2>;
};
dbgu: serial@ffffee00 {

4
arch/arm/boot/dts/at91sam9n12.dtsi
View File

@ -107,6 +107,7 @@ pioA: gpio@fffff400 {
#gpio-cells = <2>;
gpio-controller;
interrupt-controller;
#interrupt-cells = <2>;
};
pioB: gpio@fffff600 {
@ -116,6 +117,7 @@ pioB: gpio@fffff600 {
#gpio-cells = <2>;
gpio-controller;
interrupt-controller;
#interrupt-cells = <2>;
};
pioC: gpio@fffff800 {
@ -125,6 +127,7 @@ pioC: gpio@fffff800 {
#gpio-cells = <2>;
gpio-controller;
interrupt-controller;
#interrupt-cells = <2>;
};
pioD: gpio@fffffa00 {
@ -134,6 +137,7 @@ pioD: gpio@fffffa00 {
#gpio-cells = <2>;
gpio-controller;
interrupt-controller;
#interrupt-cells = <2>;
};
dbgu: serial@fffff200 {

4
arch/arm/boot/dts/at91sam9x5.dtsi
View File

@ -115,6 +115,7 @@ pioA: gpio@fffff400 {
#gpio-cells = <2>;
gpio-controller;
interrupt-controller;
#interrupt-cells = <2>;
};
pioB: gpio@fffff600 {
@ -124,6 +125,7 @@ pioB: gpio@fffff600 {
#gpio-cells = <2>;
gpio-controller;
interrupt-controller;
#interrupt-cells = <2>;
};
pioC: gpio@fffff800 {
@ -133,6 +135,7 @@ pioC: gpio@fffff800 {
#gpio-cells = <2>;
gpio-controller;
interrupt-controller;
#interrupt-cells = <2>;
};
pioD: gpio@fffffa00 {
@ -142,6 +145,7 @@ pioD: gpio@fffffa00 {
#gpio-cells = <2>;
gpio-controller;
interrupt-controller;
#interrupt-cells = <2>;
};
dbgu: serial@fffff200 {

2
arch/arm/configs/armadillo800eva_defconfig
View File

@ -33,7 +33,7 @@ CONFIG_AEABI=y
CONFIG_FORCE_MAX_ZONEORDER=13
CONFIG_ZBOOT_ROM_TEXT=0x0
CONFIG_ZBOOT_ROM_BSS=0x0
CONFIG_CMDLINE="console=tty0 console=ttySC1,115200 earlyprintk=sh-sci.1,115200 ignore_loglevel root=/dev/nfs ip=dhcp nfsroot=,rsize=4096,wsize=4096"
CONFIG_CMDLINE="console=tty0 console=ttySC1,115200 earlyprintk=sh-sci.1,115200 ignore_loglevel root=/dev/nfs ip=dhcp nfsroot=,rsize=4096,wsize=4096 rw"
CONFIG_CMDLINE_FORCE=y
CONFIG_KEXEC=y
CONFIG_VFP=y

8
arch/arm/include/asm/assembler.h
View File

@ -320,4 +320,12 @@
.size \name , . - \name
.endm
.macro check_uaccess, addr:req, size:req, limit:req, tmp:req, bad:req
#ifndef CONFIG_CPU_USE_DOMAINS
adds \tmp, \addr, #\size - 1
sbcccs \tmp, \tmp, \limit
bcs \bad
#endif
.endm
#endif /* __ASM_ASSEMBLER_H__ */

7
arch/arm/include/asm/dma-mapping.h
View File

@ -202,6 +202,13 @@ static inline void dma_free_writecombine(struct device *dev, size_t size,
return dma_free_attrs(dev, size, cpu_addr, dma_handle, &attrs);
}
/*
* This can be called during early boot to increase the size of the atomic
* coherent DMA pool above the default value of 256KiB. It must be called
* before postcore_initcall.
*/
extern void __init init_dma_coherent_pool_size(unsigned long size);
/*
* This can be called during boot to increase the size of the consistent
* DMA region above it's default value of 2MB. It must be called before the

3
arch/arm/include/asm/memory.h
View File

@ -187,6 +187,7 @@ static inline unsigned long __phys_to_virt(unsigned long x)
#define __phys_to_virt(x) ((x) - PHYS_OFFSET + PAGE_OFFSET)
#endif
#endif
#endif /* __ASSEMBLY__ */
#ifndef PHYS_OFFSET
#ifdef PLAT_PHYS_OFFSET
@ -196,6 +197,8 @@ static inline unsigned long __phys_to_virt(unsigned long x)
#endif
#endif
#ifndef __ASSEMBLY__
/*
* PFNs are used to describe any physical page; this means
* PFN 0 == physical address 0.

4
arch/arm/include/asm/tlb.h
View File

@ -199,6 +199,9 @@ static inline void __pte_free_tlb(struct mmu_gather *tlb, pgtable_t pte,
{
pgtable_page_dtor(pte);
#ifdef CONFIG_ARM_LPAE
tlb_add_flush(tlb, addr);
#else
/*
* With the classic ARM MMU, a pte page has two corresponding pmd
* entries, each covering 1MB.
@ -206,6 +209,7 @@ static inline void __pte_free_tlb(struct mmu_gather *tlb, pgtable_t pte,
addr &= PMD_MASK;
tlb_add_flush(tlb, addr + SZ_1M - PAGE_SIZE);
tlb_add_flush(tlb, addr + SZ_1M);
#endif
tlb_remove_page(tlb, pte);
}

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

@ -101,28 +101,39 @@ extern int __get_user_1(void *);
extern int __get_user_2(void *);
extern int __get_user_4(void *);
#define __get_user_x(__r2,__p,__e,__s,__i...) \
#define __GUP_CLOBBER_1 "lr", "cc"
#ifdef CONFIG_CPU_USE_DOMAINS
#define __GUP_CLOBBER_2 "ip", "lr", "cc"
#else
#define __GUP_CLOBBER_2 "lr", "cc"
#endif
#define __GUP_CLOBBER_4 "lr", "cc"
#define __get_user_x(__r2,__p,__e,__l,__s) \
__asm__ __volatile__ ( \
__asmeq("%0", "r0") __asmeq("%1", "r2") \
__asmeq("%3", "r1") \
"bl __get_user_" #__s \
: "=&r" (__e), "=r" (__r2) \
: "0" (__p) \
: __i, "cc")
: "0" (__p), "r" (__l) \
: __GUP_CLOBBER_##__s)
#define get_user(x,p) \
#define __get_user_check(x,p) \
({ \
unsigned long __limit = current_thread_info()->addr_limit - 1; \
register const typeof(*(p)) __user *__p asm("r0") = (p);\
register unsigned long __r2 asm("r2"); \
register unsigned long __l asm("r1") = __limit; \
register int __e asm("r0"); \
switch (sizeof(*(__p))) { \
case 1: \
__get_user_x(__r2, __p, __e, 1, "lr"); \
break; \
__get_user_x(__r2, __p, __e, __l, 1); \
break; \
case 2: \
__get_user_x(__r2, __p, __e, 2, "r3", "lr"); \
__get_user_x(__r2, __p, __e, __l, 2); \
break; \
case 4: \
__get_user_x(__r2, __p, __e, 4, "lr"); \
__get_user_x(__r2, __p, __e, __l, 4); \
break; \
default: __e = __get_user_bad(); break; \
} \
@ -130,42 +141,57 @@ extern int __get_user_4(void *);
__e; \
})
#define get_user(x,p) \
({ \
might_fault(); \
__get_user_check(x,p); \
})
extern int __put_user_1(void *, unsigned int);
extern int __put_user_2(void *, unsigned int);
extern int __put_user_4(void *, unsigned int);
extern int __put_user_8(void *, unsigned long long);
#define __put_user_x(__r2,__p,__e,__s) \
#define __put_user_x(__r2,__p,__e,__l,__s) \
__asm__ __volatile__ ( \
__asmeq("%0", "r0") __asmeq("%2", "r2") \
__asmeq("%3", "r1") \
"bl __put_user_" #__s \
: "=&r" (__e) \
: "0" (__p), "r" (__r2) \
: "0" (__p), "r" (__r2), "r" (__l) \
: "ip", "lr", "cc")
#define put_user(x,p) \
#define __put_user_check(x,p) \
({ \
unsigned long __limit = current_thread_info()->addr_limit - 1; \
register const typeof(*(p)) __r2 asm("r2") = (x); \
register const typeof(*(p)) __user *__p asm("r0") = (p);\
register unsigned long __l asm("r1") = __limit; \
register int __e asm("r0"); \
switch (sizeof(*(__p))) { \
case 1: \
__put_user_x(__r2, __p, __e, 1); \
__put_user_x(__r2, __p, __e, __l, 1); \
break; \
case 2: \
__put_user_x(__r2, __p, __e, 2); \
__put_user_x(__r2, __p, __e, __l, 2); \
break; \
case 4: \
__put_user_x(__r2, __p, __e, 4); \
__put_user_x(__r2, __p, __e, __l, 4); \
break; \
case 8: \
__put_user_x(__r2, __p, __e, 8); \
__put_user_x(__r2, __p, __e, __l, 8); \
break; \
default: __e = __put_user_bad(); break; \
} \
__e; \
})
#define put_user(x,p) \
({ \
might_fault(); \
__put_user_check(x,p); \
})
#else /* CONFIG_MMU */
/*
@ -219,6 +245,7 @@ do { \
unsigned long __gu_addr = (unsigned long)(ptr); \
unsigned long __gu_val; \
__chk_user_ptr(ptr); \
might_fault(); \
switch (sizeof(*(ptr))) { \
case 1: __get_user_asm_byte(__gu_val,__gu_addr,err); break; \
case 2: __get_user_asm_half(__gu_val,__gu_addr,err); break; \
@ -300,6 +327,7 @@ do { \
unsigned long __pu_addr = (unsigned long)(ptr); \
__typeof__(*(ptr)) __pu_val = (x); \
__chk_user_ptr(ptr); \
might_fault(); \
switch (sizeof(*(ptr))) { \
case 1: __put_user_asm_byte(__pu_val,__pu_addr,err); break; \
case 2: __put_user_asm_half(__pu_val,__pu_addr,err); break; \

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

@ -404,6 +404,7 @@
#define __NR_setns (__NR_SYSCALL_BASE+375)
#define __NR_process_vm_readv (__NR_SYSCALL_BASE+376)
#define __NR_process_vm_writev (__NR_SYSCALL_BASE+377)
/* 378 for kcmp */
/*
* The following SWIs are ARM private.
@ -483,6 +484,7 @@
*/
#define __IGNORE_fadvise64_64
#define __IGNORE_migrate_pages
#define __IGNORE_kcmp
#endif /* __KERNEL__ */
#endif /* __ASM_ARM_UNISTD_H */

1
arch/arm/kernel/calls.S
View File

@ -387,6 +387,7 @@
/* 375 */ CALL(sys_setns)
CALL(sys_process_vm_readv)
CALL(sys_process_vm_writev)
CALL(sys_ni_syscall) /* reserved for sys_kcmp */
#ifndef syscalls_counted
.equ syscalls_padding, ((NR_syscalls + 3) & ~3) - NR_syscalls
#define syscalls_counted

62
arch/arm/kernel/hw_breakpoint.c
View File

@ -159,6 +159,12 @@ static int debug_arch_supported(void)
arch >= ARM_DEBUG_ARCH_V7_1;
}
/* Can we determine the watchpoint access type from the fsr? */
static int debug_exception_updates_fsr(void)
{
return 0;
}
/* Determine number of WRP registers available. */
static int get_num_wrp_resources(void)
{
@ -604,13 +610,14 @@ int arch_validate_hwbkpt_settings(struct perf_event *bp)
/* Aligned */
break;
case 1:
/* Allow single byte watchpoint. */
if (info->ctrl.len == ARM_BREAKPOINT_LEN_1)
break;
case 2:
/* Allow halfword watchpoints and breakpoints. */
if (info->ctrl.len == ARM_BREAKPOINT_LEN_2)
break;
case 3:
/* Allow single byte watchpoint. */
if (info->ctrl.len == ARM_BREAKPOINT_LEN_1)
break;
default:
ret = -EINVAL;
goto out;
@ -619,18 +626,35 @@ int arch_validate_hwbkpt_settings(struct perf_event *bp)
info->address &= ~alignment_mask;
info->ctrl.len <<= offset;
/*
* Currently we rely on an overflow handler to take
* care of single-stepping the breakpoint when it fires.
* In the case of userspace breakpoints on a core with V7 debug,
* we can use the mismatch feature as a poor-man's hardware
* single-step, but this only works for per-task breakpoints.
*/
if (!bp->overflow_handler && (arch_check_bp_in_kernelspace(bp) ||
!core_has_mismatch_brps() || !bp->hw.bp_target)) {
pr_warning("overflow handler required but none found\n");
ret = -EINVAL;
if (!bp->overflow_handler) {
/*
* Mismatch breakpoints are required for single-stepping
* breakpoints.
*/
if (!core_has_mismatch_brps())
return -EINVAL;
/* We don't allow mismatch breakpoints in kernel space. */
if (arch_check_bp_in_kernelspace(bp))
return -EPERM;
/*
* Per-cpu breakpoints are not supported by our stepping
* mechanism.
*/
if (!bp->hw.bp_target)
return -EINVAL;
/*
* We only support specific access types if the fsr
* reports them.
*/
if (!debug_exception_updates_fsr() &&
(info->ctrl.type == ARM_BREAKPOINT_LOAD ||
info->ctrl.type == ARM_BREAKPOINT_STORE))
return -EINVAL;
}
out:
return ret;
}
@ -706,10 +730,12 @@ static void watchpoint_handler(unsigned long addr, unsigned int fsr,
goto unlock;
/* Check that the access type matches. */
access = (fsr & ARM_FSR_ACCESS_MASK) ? HW_BREAKPOINT_W :
HW_BREAKPOINT_R;
if (!(access & hw_breakpoint_type(wp)))
goto unlock;
if (debug_exception_updates_fsr()) {
access = (fsr & ARM_FSR_ACCESS_MASK) ?
HW_BREAKPOINT_W : HW_BREAKPOINT_R;
if (!(access & hw_breakpoint_type(wp)))
goto unlock;
}
/* We have a winner. */
info->trigger = addr;

48
arch/arm/kernel/smp_twd.c
View File

@ -11,7 +11,6 @@
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/clk.h>
#include <linux/cpufreq.h>
#include <linux/delay.h>
#include <linux/device.h>
#include <linux/err.h>
@ -96,7 +95,52 @@ static void twd_timer_stop(struct clock_event_device *clk)
disable_percpu_irq(clk->irq);
}
#ifdef CONFIG_CPU_FREQ
#ifdef CONFIG_COMMON_CLK
/*
* Updates clockevent frequency when the cpu frequency changes.
* Called on the cpu that is changing frequency with interrupts disabled.
*/
static void twd_update_frequency(void *new_rate)
{
twd_timer_rate = *((unsigned long *) new_rate);
clockevents_update_freq(*__this_cpu_ptr(twd_evt), twd_timer_rate);
}
static int twd_rate_change(struct notifier_block *nb,
unsigned long flags, void *data)
{
struct clk_notifier_data *cnd = data;
/*
* The twd clock events must be reprogrammed to account for the new
* frequency. The timer is local to a cpu, so cross-call to the
* changing cpu.
*/
if (flags == POST_RATE_CHANGE)
smp_call_function(twd_update_frequency,
(void *)&cnd->new_rate, 1);
return NOTIFY_OK;
}
static struct notifier_block twd_clk_nb = {
.notifier_call = twd_rate_change,
};
static int twd_clk_init(void)
{
if (twd_evt && *__this_cpu_ptr(twd_evt) && !IS_ERR(twd_clk))
return clk_notifier_register(twd_clk, &twd_clk_nb);
return 0;
}
core_initcall(twd_clk_init);
#elif defined (CONFIG_CPU_FREQ)
#include <linux/cpufreq.h>
/*
* Updates clockevent frequency when the cpu frequency changes.

11
arch/arm/kernel/traps.c
View File

@ -420,20 +420,23 @@ asmlinkage void __exception do_undefinstr(struct pt_regs *regs)
#endif
instr = *(u32 *) pc;
} else if (thumb_mode(regs)) {
get_user(instr, (u16 __user *)pc);
if (get_user(instr, (u16 __user *)pc))
goto die_sig;
if (is_wide_instruction(instr)) {
unsigned int instr2;
get_user(instr2, (u16 __user *)pc+1);
if (get_user(instr2, (u16 __user *)pc+1))
goto die_sig;
instr <<= 16;
instr |= instr2;
}
} else {
get_user(instr, (u32 __user *)pc);
} else if (get_user(instr, (u32 __user *)pc)) {
goto die_sig;
}
if (call_undef_hook(regs, instr) == 0)
return;
die_sig:
#ifdef CONFIG_DEBUG_USER
if (user_debug & UDBG_UNDEFINED) {
printk(KERN_INFO "%s (%d): undefined instruction: pc=%p\n",

1
arch/arm/lib/delay.c
View File

@ -59,6 +59,7 @@ void __init init_current_timer_delay(unsigned long freq)
{
pr_info("Switching to timer-based delay loop\n");
lpj_fine = freq / HZ;
loops_per_jiffy = lpj_fine;
arm_delay_ops.delay = __timer_delay;
arm_delay_ops.const_udelay = __timer_const_udelay;
arm_delay_ops.udelay = __timer_udelay;

23
arch/arm/lib/getuser.S
View File

@ -16,8 +16,9 @@
* __get_user_X
*
* Inputs: r0 contains the address
* r1 contains the address limit, which must be preserved
* Outputs: r0 is the error code
* r2, r3 contains the zero-extended value
* r2 contains the zero-extended value
* lr corrupted
*
* No other registers must be altered. (see <asm/uaccess.h>
@ -27,33 +28,39 @@
* Note also that it is intended that __get_user_bad is not global.
*/
#include <linux/linkage.h>
#include <asm/assembler.h>
#include <asm/errno.h>
#include <asm/domain.h>
ENTRY(__get_user_1)
check_uaccess r0, 1, r1, r2, __get_user_bad
1: TUSER(ldrb) r2, [r0]
mov r0, #0
mov pc, lr
ENDPROC(__get_user_1)
ENTRY(__get_user_2)
#ifdef CONFIG_THUMB2_KERNEL
2: TUSER(ldrb) r2, [r0]
3: TUSER(ldrb) r3, [r0, #1]
check_uaccess r0, 2, r1, r2, __get_user_bad
#ifdef CONFIG_CPU_USE_DOMAINS
rb .req ip
2: ldrbt r2, [r0], #1
3: ldrbt rb, [r0], #0
#else
2: TUSER(ldrb) r2, [r0], #1
3: TUSER(ldrb) r3, [r0]
rb .req r0
2: ldrb r2, [r0]
3: ldrb rb, [r0, #1]
#endif
#ifndef __ARMEB__
orr r2, r2, r3, lsl #8
orr r2, r2, rb, lsl #8
#else
orr r2, r3, r2, lsl #8
orr r2, rb, r2, lsl #8
#endif
mov r0, #0
mov pc, lr
ENDPROC(__get_user_2)
ENTRY(__get_user_4)
check_uaccess r0, 4, r1, r2, __get_user_bad
4: TUSER(ldr) r2, [r0]
mov r0, #0
mov pc, lr

6
arch/arm/lib/putuser.S
View File

@ -16,6 +16,7 @@
* __put_user_X
*
* Inputs: r0 contains the address
* r1 contains the address limit, which must be preserved
* r2, r3 contains the value
* Outputs: r0 is the error code
* lr corrupted
@ -27,16 +28,19 @@
* Note also that it is intended that __put_user_bad is not global.
*/
#include <linux/linkage.h>
#include <asm/assembler.h>
#include <asm/errno.h>
#include <asm/domain.h>
ENTRY(__put_user_1)
check_uaccess r0, 1, r1, ip, __put_user_bad
1: TUSER(strb) r2, [r0]
mov r0, #0
mov pc, lr
ENDPROC(__put_user_1)
ENTRY(__put_user_2)
check_uaccess r0, 2, r1, ip, __put_user_bad
mov ip, r2, lsr #8
#ifdef CONFIG_THUMB2_KERNEL
#ifndef __ARMEB__
@ -60,12 +64,14 @@ ENTRY(__put_user_2)
ENDPROC(__put_user_2)
ENTRY(__put_user_4)
check_uaccess r0, 4, r1, ip, __put_user_bad
4: TUSER(str) r2, [r0]
mov r0, #0
mov pc, lr
ENDPROC(__put_user_4)
ENTRY(__put_user_8)
check_uaccess r0, 8, r1, ip, __put_user_bad
#ifdef CONFIG_THUMB2_KERNEL
5: TUSER(str) r2, [r0]
6: TUSER(str) r3, [r0, #4]

2
arch/arm/mach-at91/at91rm9200_time.c
View File

@ -197,7 +197,7 @@ void __init at91rm9200_timer_init(void)
at91_st_read(AT91_ST_SR);
/* Make IRQs happen for the system timer */
setup_irq(AT91_ID_SYS, &at91rm9200_timer_irq);
setup_irq(NR_IRQS_LEGACY + AT91_ID_SYS, &at91rm9200_timer_irq);
/* The 32KiHz "Slow Clock" (tick every 30517.58 nanoseconds) is used
* directly for the clocksource and all clockevents, after adjusting

6
arch/arm/mach-at91/at91sam9260_devices.c
View File

@ -726,6 +726,8 @@ static struct resource rtt_resources[] = {
.flags = IORESOURCE_MEM,
}, {
.flags = IORESOURCE_MEM,
}, {
.flags = IORESOURCE_IRQ,
},
};
@ -744,10 +746,12 @@ static void __init at91_add_device_rtt_rtc(void)
* The second resource is needed:
* GPBR will serve as the storage for RTC time offset
*/
at91sam9260_rtt_device.num_resources = 2;
at91sam9260_rtt_device.num_resources = 3;
rtt_resources[1].start = AT91SAM9260_BASE_GPBR +
4 * CONFIG_RTC_DRV_AT91SAM9_GPBR;
rtt_resources[1].end = rtt_resources[1].start + 3;
rtt_resources[2].start = NR_IRQS_LEGACY + AT91_ID_SYS;
rtt_resources[2].end = NR_IRQS_LEGACY + AT91_ID_SYS;
}
#else
static void __init at91_add_device_rtt_rtc(void)

6
arch/arm/mach-at91/at91sam9261_devices.c
View File

@ -609,6 +609,8 @@ static struct resource rtt_resources[] = {
.flags = IORESOURCE_MEM,
}, {
.flags = IORESOURCE_MEM,
}, {
.flags = IORESOURCE_IRQ,
}
};
@ -626,10 +628,12 @@ static void __init at91_add_device_rtt_rtc(void)
* The second resource is needed:
* GPBR will serve as the storage for RTC time offset
*/
at91sam9261_rtt_device.num_resources = 2;
at91sam9261_rtt_device.num_resources = 3;
rtt_resources[1].start = AT91SAM9261_BASE_GPBR +
4 * CONFIG_RTC_DRV_AT91SAM9_GPBR;
rtt_resources[1].end = rtt_resources[1].start + 3;
rtt_resources[2].start = NR_IRQS_LEGACY + AT91_ID_SYS;
rtt_resources[2].end = NR_IRQS_LEGACY + AT91_ID_SYS;
}
#else
static void __init at91_add_device_rtt_rtc(void)

10
arch/arm/mach-at91/at91sam9263_devices.c
View File

@ -990,6 +990,8 @@ static struct resource rtt0_resources[] = {
.flags = IORESOURCE_MEM,
}, {
.flags = IORESOURCE_MEM,
}, {
.flags = IORESOURCE_IRQ,
}
};
@ -1006,6 +1008,8 @@ static struct resource rtt1_resources[] = {
.flags = IORESOURCE_MEM,
}, {
.flags = IORESOURCE_MEM,
}, {
.flags = IORESOURCE_IRQ,
}
};
@ -1027,14 +1031,14 @@ static void __init at91_add_device_rtt_rtc(void)
* The second resource is needed only for the chosen RTT:
* GPBR will serve as the storage for RTC time offset
*/
at91sam9263_rtt0_device.num_resources = 2;
at91sam9263_rtt0_device.num_resources = 3;
at91sam9263_rtt1_device.num_resources = 1;
pdev = &at91sam9263_rtt0_device;
r = rtt0_resources;
break;
case 1:
at91sam9263_rtt0_device.num_resources = 1;
at91sam9263_rtt1_device.num_resources = 2;
at91sam9263_rtt1_device.num_resources = 3;
pdev = &at91sam9263_rtt1_device;
r = rtt1_resources;
break;
@ -1047,6 +1051,8 @@ static void __init at91_add_device_rtt_rtc(void)
pdev->name = "rtc-at91sam9";
r[1].start = AT91SAM9263_BASE_GPBR + 4 * CONFIG_RTC_DRV_AT91SAM9_GPBR;
r[1].end = r[1].start + 3;
r[2].start = NR_IRQS_LEGACY + AT91_ID_SYS;
r[2].end = NR_IRQS_LEGACY + AT91_ID_SYS;
}
#else
static void __init at91_add_device_rtt_rtc(void)

6
arch/arm/mach-at91/at91sam9g45_devices.c
View File

@ -1293,6 +1293,8 @@ static struct resource rtt_resources[] = {
.flags = IORESOURCE_MEM,
}, {
.flags = IORESOURCE_MEM,
}, {
.flags = IORESOURCE_IRQ,
}
};
@ -1310,10 +1312,12 @@ static void __init at91_add_device_rtt_rtc(void)
* The second resource is needed:
* GPBR will serve as the storage for RTC time offset
*/
at91sam9g45_rtt_device.num_resources = 2;
at91sam9g45_rtt_device.num_resources = 3;
rtt_resources[1].start = AT91SAM9G45_BASE_GPBR +
4 * CONFIG_RTC_DRV_AT91SAM9_GPBR;
rtt_resources[1].end = rtt_resources[1].start + 3;
rtt_resources[2].start = NR_IRQS_LEGACY + AT91_ID_SYS;
rtt_resources[2].end = NR_IRQS_LEGACY + AT91_ID_SYS;
}
#else
static void __init at91_add_device_rtt_rtc(void)

6
arch/arm/mach-at91/at91sam9rl_devices.c
View File

@ -688,6 +688,8 @@ static struct resource rtt_resources[] = {
.flags = IORESOURCE_MEM,
}, {
.flags = IORESOURCE_MEM,
}, {
.flags = IORESOURCE_IRQ,
}
};
@ -705,10 +707,12 @@ static void __init at91_add_device_rtt_rtc(void)
* The second resource is needed:
* GPBR will serve as the storage for RTC time offset
*/
at91sam9rl_rtt_device.num_resources = 2;
at91sam9rl_rtt_device.num_resources = 3;
rtt_resources[1].start = AT91SAM9RL_BASE_GPBR +
4 * CONFIG_RTC_DRV_AT91SAM9_GPBR;
rtt_resources[1].end = rtt_resources[1].start + 3;
rtt_resources[2].start = NR_IRQS_LEGACY + AT91_ID_SYS;
rtt_resources[2].end = NR_IRQS_LEGACY + AT91_ID_SYS;
}
#else
static void __init at91_add_device_rtt_rtc(void)

12
arch/arm/mach-at91/clock.c
View File

@ -63,6 +63,12 @@ EXPORT_SYMBOL_GPL(at91_pmc_base);
#define cpu_has_300M_plla() (cpu_is_at91sam9g10())
#define cpu_has_240M_plla() (cpu_is_at91sam9261() \
|| cpu_is_at91sam9263() \
|| cpu_is_at91sam9rl())
#define cpu_has_210M_plla() (cpu_is_at91sam9260())
#define cpu_has_pllb() (!(cpu_is_at91sam9rl() \
|| cpu_is_at91sam9g45() \
|| cpu_is_at91sam9x5() \
@ -706,6 +712,12 @@ static int __init at91_pmc_init(unsigned long main_clock)
} else if (cpu_has_800M_plla()) {
if (plla.rate_hz > 800000000)
pll_overclock = true;
} else if (cpu_has_240M_plla()) {
if (plla.rate_hz > 240000000)
pll_overclock = true;
} else if (cpu_has_210M_plla()) {
if (plla.rate_hz > 210000000)
pll_overclock = true;
} else {
if (plla.rate_hz > 209000000)
pll_overclock = true;

1
arch/arm/mach-gemini/irq.c
View File

@ -17,6 +17,7 @@
#include <linux/sched.h>
#include <asm/irq.h>
#include <asm/mach/irq.h>
#include <asm/system_misc.h>
#include <mach/hardware.h>
#define IRQ_SOURCE(base_addr) (base_addr + 0x00)

8
arch/arm/mach-imx/clk-imx25.c
View File

@ -222,10 +222,8 @@ int __init mx25_clocks_init(void)
clk_register_clkdev(clk[lcdc_ipg], "ipg", "imx-fb.0");
clk_register_clkdev(clk[lcdc_ahb], "ahb", "imx-fb.0");
clk_register_clkdev(clk[wdt_ipg], NULL, "imx2-wdt.0");
clk_register_clkdev(clk[ssi1_ipg_per], "per", "imx-ssi.0");
clk_register_clkdev(clk[ssi1_ipg], "ipg", "imx-ssi.0");
clk_register_clkdev(clk[ssi2_ipg_per], "per", "imx-ssi.1");
clk_register_clkdev(clk[ssi2_ipg], "ipg", "imx-ssi.1");
clk_register_clkdev(clk[ssi1_ipg], NULL, "imx-ssi.0");
clk_register_clkdev(clk[ssi2_ipg], NULL, "imx-ssi.1");
clk_register_clkdev(clk[esdhc1_ipg_per], "per", "sdhci-esdhc-imx25.0");
clk_register_clkdev(clk[esdhc1_ipg], "ipg", "sdhci-esdhc-imx25.0");
clk_register_clkdev(clk[esdhc1_ahb], "ahb", "sdhci-esdhc-imx25.0");
@ -243,6 +241,6 @@ int __init mx25_clocks_init(void)
clk_register_clkdev(clk[sdma_ahb], "ahb", "imx35-sdma");
clk_register_clkdev(clk[iim_ipg], "iim", NULL);
mxc_timer_init(MX25_IO_ADDRESS(MX25_GPT1_BASE_ADDR), 54);
mxc_timer_init(MX25_IO_ADDRESS(MX25_GPT1_BASE_ADDR), MX25_INT_GPT1);
return 0;
}

6
arch/arm/mach-imx/clk-imx35.c
View File

@ -230,10 +230,8 @@ int __init mx35_clocks_init()
clk_register_clkdev(clk[ipu_gate], NULL, "mx3_sdc_fb");
clk_register_clkdev(clk[owire_gate], NULL, "mxc_w1");
clk_register_clkdev(clk[sdma_gate], NULL, "imx35-sdma");
clk_register_clkdev(clk[ipg], "ipg", "imx-ssi.0");
clk_register_clkdev(clk[ssi1_div_post], "per", "imx-ssi.0");
clk_register_clkdev(clk[ipg], "ipg", "imx-ssi.1");
clk_register_clkdev(clk[ssi2_div_post], "per", "imx-ssi.1");
clk_register_clkdev(clk[ssi1_gate], NULL, "imx-ssi.0");
clk_register_clkdev(clk[ssi2_gate], NULL, "imx-ssi.1");
/* i.mx35 has the i.mx21 type uart */
clk_register_clkdev(clk[uart1_gate], "per", "imx21-uart.0");
clk_register_clkdev(clk[ipg], "ipg", "imx21-uart.0");

3
arch/arm/mach-imx/mach-armadillo5x0.c
View File

@ -526,7 +526,8 @@ static void __init armadillo5x0_init(void)
imx31_add_mxc_nand(&armadillo5x0_nand_board_info);
/* set NAND page size to 2k if not configured via boot mode pins */
__raw_writel(__raw_readl(MXC_CCM_RCSR) | (1 << 30), MXC_CCM_RCSR);
__raw_writel(__raw_readl(mx3_ccm_base + MXC_CCM_RCSR) |
(1 << 30), mx3_ccm_base + MXC_CCM_RCSR);
/* RTC */
/* Get RTC IRQ and register the chip */

7
arch/arm/mach-kirkwood/common.c
View File

@ -517,6 +517,13 @@ void __init kirkwood_wdt_init(void)
void __init kirkwood_init_early(void)
{
orion_time_set_base(TIMER_VIRT_BASE);
/*
* Some Kirkwood devices allocate their coherent buffers from atomic
* context. Increase size of atomic coherent pool to make sure such
* the allocations won't fail.
*/
init_dma_coherent_pool_size(SZ_1M);
}
int kirkwood_tclk;

1
arch/arm/mach-kirkwood/db88f6281-bp-setup.c
View File

@ -10,6 +10,7 @@
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/sizes.h>
#include <linux/platform_device.h>
#include <linux/mtd/partitions.h>
#include <linux/ata_platform.h>

3
arch/arm/mach-omap2/Kconfig
View File

@ -232,10 +232,11 @@ config MACH_OMAP3_PANDORA
select OMAP_PACKAGE_CBB
select REGULATOR_FIXED_VOLTAGE if REGULATOR
config MACH_OMAP3_TOUCHBOOK
config MACH_TOUCHBOOK
bool "OMAP3 Touch Book"
depends on ARCH_OMAP3
default y
select OMAP_PACKAGE_CBB
config MACH_OMAP_3430SDP
bool "OMAP 3430 SDP board"

2
arch/arm/mach-omap2/Makefile
View File

@ -255,7 +255,7 @@ obj-$(CONFIG_MACH_OMAP_3630SDP) += board-zoom-display.o
obj-$(CONFIG_MACH_CM_T35) += board-cm-t35.o
obj-$(CONFIG_MACH_CM_T3517) += board-cm-t3517.o
obj-$(CONFIG_MACH_IGEP0020) += board-igep0020.o
obj-$(CONFIG_MACH_OMAP3_TOUCHBOOK) += board-omap3touchbook.o
obj-$(CONFIG_MACH_TOUCHBOOK) += board-omap3touchbook.o
obj-$(CONFIG_MACH_OMAP_4430SDP) += board-4430sdp.o
obj-$(CONFIG_MACH_OMAP4_PANDA) += board-omap4panda.o

14
arch/arm/mach-omap2/clock33xx_data.c
View File

@ -1036,13 +1036,13 @@ static struct omap_clk am33xx_clks[] = {
CLK(NULL, "mmu_fck", &mmu_fck, CK_AM33XX),
CLK(NULL, "smartreflex0_fck", &smartreflex0_fck, CK_AM33XX),
CLK(NULL, "smartreflex1_fck", &smartreflex1_fck, CK_AM33XX),
CLK(NULL, "gpt1_fck", &timer1_fck, CK_AM33XX),
CLK(NULL, "gpt2_fck", &timer2_fck, CK_AM33XX),
CLK(NULL, "gpt3_fck", &timer3_fck, CK_AM33XX),
CLK(NULL, "gpt4_fck", &timer4_fck, CK_AM33XX),
CLK(NULL, "gpt5_fck", &timer5_fck, CK_AM33XX),
CLK(NULL, "gpt6_fck", &timer6_fck, CK_AM33XX),
CLK(NULL, "gpt7_fck", &timer7_fck, CK_AM33XX),
CLK(NULL, "timer1_fck", &timer1_fck, CK_AM33XX),
CLK(NULL, "timer2_fck", &timer2_fck, CK_AM33XX),
CLK(NULL, "timer3_fck", &timer3_fck, CK_AM33XX),
CLK(NULL, "timer4_fck", &timer4_fck, CK_AM33XX),
CLK(NULL, "timer5_fck", &timer5_fck, CK_AM33XX),
CLK(NULL, "timer6_fck", &timer6_fck, CK_AM33XX),
CLK(NULL, "timer7_fck", &timer7_fck, CK_AM33XX),
CLK(NULL, "usbotg_fck", &usbotg_fck, CK_AM33XX),
CLK(NULL, "ieee5000_fck", &ieee5000_fck, CK_AM33XX),
CLK(NULL, "wdt1_fck", &wdt1_fck, CK_AM33XX),

50
arch/arm/mach-omap2/clockdomain2xxx_3xxx.c
View File

@ -241,6 +241,52 @@ static void omap3_clkdm_deny_idle(struct clockdomain *clkdm)
_clkdm_del_autodeps(clkdm);
}
static int omap3xxx_clkdm_clk_enable(struct clockdomain *clkdm)
{
bool hwsup = false;
if (!clkdm->clktrctrl_mask)
return 0;
hwsup = omap2_cm_is_clkdm_in_hwsup(clkdm->pwrdm.ptr->prcm_offs,
clkdm->clktrctrl_mask);
if (hwsup) {
/* Disable HW transitions when we are changing deps */
_disable_hwsup(clkdm);
_clkdm_add_autodeps(clkdm);
_enable_hwsup(clkdm);
} else {
if (clkdm->flags & CLKDM_CAN_FORCE_WAKEUP)
omap3_clkdm_wakeup(clkdm);
}
return 0;
}
static int omap3xxx_clkdm_clk_disable(struct clockdomain *clkdm)
{
bool hwsup = false;
if (!clkdm->clktrctrl_mask)
return 0;
hwsup = omap2_cm_is_clkdm_in_hwsup(clkdm->pwrdm.ptr->prcm_offs,
clkdm->clktrctrl_mask);
if (hwsup) {
/* Disable HW transitions when we are changing deps */
_disable_hwsup(clkdm);
_clkdm_del_autodeps(clkdm);
_enable_hwsup(clkdm);
} else {
if (clkdm->flags & CLKDM_CAN_FORCE_SLEEP)
omap3_clkdm_sleep(clkdm);
}
return 0;
}
struct clkdm_ops omap2_clkdm_operations = {
.clkdm_add_wkdep = omap2_clkdm_add_wkdep,
.clkdm_del_wkdep = omap2_clkdm_del_wkdep,
@ -267,6 +313,6 @@ struct clkdm_ops omap3_clkdm_operations = {
.clkdm_wakeup = omap3_clkdm_wakeup,
.clkdm_allow_idle = omap3_clkdm_allow_idle,
.clkdm_deny_idle = omap3_clkdm_deny_idle,
.clkdm_clk_enable = omap2_clkdm_clk_enable,
.clkdm_clk_disable = omap2_clkdm_clk_disable,
.clkdm_clk_enable = omap3xxx_clkdm_clk_enable,
.clkdm_clk_disable = omap3xxx_clkdm_clk_disable,
};

1
arch/arm/mach-omap2/cm-regbits-34xx.h
View File

@ -67,6 +67,7 @@
#define OMAP3430_EN_IVA2_DPLL_MASK (0x7 << 0)
/* CM_IDLEST_IVA2 */
#define OMAP3430_ST_IVA2_SHIFT 0
#define OMAP3430_ST_IVA2_MASK (1 << 0)
/* CM_IDLEST_PLL_IVA2 */

2
arch/arm/mach-omap2/omap-wakeupgen.c
View File

@ -46,7 +46,7 @@
static void __iomem *wakeupgen_base;
static void __iomem *sar_base;
static DEFINE_SPINLOCK(wakeupgen_lock);
static unsigned int irq_target_cpu[NR_IRQS];
static unsigned int irq_target_cpu[MAX_IRQS];
static unsigned int irq_banks = MAX_NR_REG_BANKS;
static unsigned int max_irqs = MAX_IRQS;
static unsigned int omap_secure_apis;

1
arch/arm/mach-omap2/omap_hwmod.c
View File

@ -1889,6 +1889,7 @@ static int _enable(struct omap_hwmod *oh)
_enable_sysc(oh);
}
} else {
_omap4_disable_module(oh);
_disable_clocks(oh);
pr_debug("omap_hwmod: %s: _wait_target_ready: %d\n",
oh->name, r);

15
arch/arm/mach-omap2/omap_hwmod_3xxx_data.c
View File

@ -100,9 +100,9 @@ static struct omap_hwmod omap3xxx_mpu_hwmod = {
/* IVA2 (IVA2) */
static struct omap_hwmod_rst_info omap3xxx_iva_resets[] = {
{ .name = "logic", .rst_shift = 0 },
{ .name = "seq0", .rst_shift = 1 },
{ .name = "seq1", .rst_shift = 2 },
{ .name = "logic", .rst_shift = 0, .st_shift = 8 },
{ .name = "seq0", .rst_shift = 1, .st_shift = 9 },
{ .name = "seq1", .rst_shift = 2, .st_shift = 10 },
};
static struct omap_hwmod omap3xxx_iva_hwmod = {
@ -112,6 +112,15 @@ static struct omap_hwmod omap3xxx_iva_hwmod = {
.rst_lines = omap3xxx_iva_resets,
.rst_lines_cnt = ARRAY_SIZE(omap3xxx_iva_resets),
.main_clk = "iva2_ck",
.prcm = {
.omap2 = {
.module_offs = OMAP3430_IVA2_MOD,
.prcm_reg_id = 1,
.module_bit = OMAP3430_CM_FCLKEN_IVA2_EN_IVA2_SHIFT,
.idlest_reg_id = 1,
.idlest_idle_bit = OMAP3430_ST_IVA2_SHIFT,
}
},
};
/* timer class */

12
arch/arm/mach-omap2/omap_hwmod_44xx_data.c
View File

@ -4210,7 +4210,7 @@ static struct omap_hwmod_ocp_if omap44xx_dsp__iva = {
};
/* dsp -> sl2if */
static struct omap_hwmod_ocp_if omap44xx_dsp__sl2if = {
static struct omap_hwmod_ocp_if __maybe_unused omap44xx_dsp__sl2if = {
.master = &omap44xx_dsp_hwmod,
.slave = &omap44xx_sl2if_hwmod,
.clk = "dpll_iva_m5x2_ck",
@ -4828,7 +4828,7 @@ static struct omap_hwmod_ocp_if omap44xx_l3_main_2__iss = {
};
/* iva -> sl2if */
static struct omap_hwmod_ocp_if omap44xx_iva__sl2if = {
static struct omap_hwmod_ocp_if __maybe_unused omap44xx_iva__sl2if = {
.master = &omap44xx_iva_hwmod,
.slave = &omap44xx_sl2if_hwmod,
.clk = "dpll_iva_m5x2_ck",
@ -5362,7 +5362,7 @@ static struct omap_hwmod_ocp_if omap44xx_l4_wkup__scrm = {
};
/* l3_main_2 -> sl2if */
static struct omap_hwmod_ocp_if omap44xx_l3_main_2__sl2if = {
static struct omap_hwmod_ocp_if __maybe_unused omap44xx_l3_main_2__sl2if = {
.master = &omap44xx_l3_main_2_hwmod,
.slave = &omap44xx_sl2if_hwmod,
.clk = "l3_div_ck",
@ -6032,7 +6032,7 @@ static struct omap_hwmod_ocp_if *omap44xx_hwmod_ocp_ifs[] __initdata = {
&omap44xx_l4_abe__dmic,
&omap44xx_l4_abe__dmic_dma,
&omap44xx_dsp__iva,
&omap44xx_dsp__sl2if,
/* &omap44xx_dsp__sl2if, */
&omap44xx_l4_cfg__dsp,
&omap44xx_l3_main_2__dss,
&omap44xx_l4_per__dss,
@ -6068,7 +6068,7 @@ static struct omap_hwmod_ocp_if *omap44xx_hwmod_ocp_ifs[] __initdata = {
&omap44xx_l4_per__i2c4,
&omap44xx_l3_main_2__ipu,
&omap44xx_l3_main_2__iss,
&omap44xx_iva__sl2if,
/* &omap44xx_iva__sl2if, */
&omap44xx_l3_main_2__iva,
&omap44xx_l4_wkup__kbd,
&omap44xx_l4_cfg__mailbox,
@ -6099,7 +6099,7 @@ static struct omap_hwmod_ocp_if *omap44xx_hwmod_ocp_ifs[] __initdata = {
&omap44xx_l4_cfg__cm_core,
&omap44xx_l4_wkup__prm,
&omap44xx_l4_wkup__scrm,
&omap44xx_l3_main_2__sl2if,
/* &omap44xx_l3_main_2__sl2if, */
&omap44xx_l4_abe__slimbus1,
&omap44xx_l4_abe__slimbus1_dma,
&omap44xx_l4_per__slimbus2,

7
arch/arm/mach-omap2/timer.c
View File

@ -260,6 +260,7 @@ static u32 notrace dmtimer_read_sched_clock(void)
return 0;
}
#ifdef CONFIG_OMAP_32K_TIMER
/* Setup free-running counter for clocksource */
static int __init omap2_sync32k_clocksource_init(void)
{
@ -299,6 +300,12 @@ static int __init omap2_sync32k_clocksource_init(void)
return ret;
}
#else
static inline int omap2_sync32k_clocksource_init(void)
{
return -ENODEV;
}
#endif
static void __init omap2_gptimer_clocksource_init(int gptimer_id,
const char *fck_source)

13
arch/arm/mach-shmobile/board-armadillo800eva.c
View File

@ -520,13 +520,14 @@ static struct platform_device hdmi_lcdc_device = {
};
/* GPIO KEY */
#define GPIO_KEY(c, g, d) { .code = c, .gpio = g, .desc = d, .active_low = 1 }
#define GPIO_KEY(c, g, d, ...) \
{ .code = c, .gpio = g, .desc = d, .active_low = 1, __VA_ARGS__ }
static struct gpio_keys_button gpio_buttons[] = {
GPIO_KEY(KEY_POWER, GPIO_PORT99, "SW1"),
GPIO_KEY(KEY_BACK, GPIO_PORT100, "SW2"),
GPIO_KEY(KEY_MENU, GPIO_PORT97, "SW3"),
GPIO_KEY(KEY_HOME, GPIO_PORT98, "SW4"),
GPIO_KEY(KEY_POWER, GPIO_PORT99, "SW3", .wakeup = 1),
GPIO_KEY(KEY_BACK, GPIO_PORT100, "SW4"),
GPIO_KEY(KEY_MENU, GPIO_PORT97, "SW5"),
GPIO_KEY(KEY_HOME, GPIO_PORT98, "SW6"),
};
static struct gpio_keys_platform_data gpio_key_info = {
@ -901,8 +902,8 @@ static struct platform_device *eva_devices[] __initdata = {
&camera_device,
&ceu0_device,
&fsi_device,
&fsi_hdmi_device,
&fsi_wm8978_device,
&fsi_hdmi_device,
};
static void __init eva_clock_init(void)

4
arch/arm/mach-shmobile/board-kzm9g.c
View File

@ -346,11 +346,11 @@ static struct resource sh_mmcif_resources[] = {
.flags = IORESOURCE_MEM,
},
[1] = {
.start = gic_spi(141),
.start = gic_spi(140),
.flags = IORESOURCE_IRQ,
},
[2] = {
.start = gic_spi(140),
.start = gic_spi(141),
.flags = IORESOURCE_IRQ,
},
};

3
arch/arm/mach-shmobile/board-mackerel.c
View File

@ -695,6 +695,7 @@ static struct platform_device usbhs0_device = {
* - J30 "open"
* - modify usbhs1_get_id() USBHS_HOST -> USBHS_GADGET
* - add .get_vbus = usbhs_get_vbus in usbhs1_private
* - check usbhs0_device(pio)/usbhs1_device(irq) order in mackerel_devices.
*/
#define IRQ8 evt2irq(0x0300)
#define USB_PHY_MODE (1 << 4)
@ -1325,8 +1326,8 @@ static struct platform_device *mackerel_devices[] __initdata = {
&nor_flash_device,
&smc911x_device,
&lcdc_device,
&usbhs1_device,
&usbhs0_device,
&usbhs1_device,
&leds_device,
&fsi_device,
&fsi_ak4643_device,

2
arch/arm/mach-shmobile/board-marzen.c
View File

@ -67,7 +67,7 @@ static struct smsc911x_platform_config smsc911x_platdata = {
static struct platform_device eth_device = {
.name = "smsc911x",
.id = 0,
.id = -1,
.dev = {
.platform_data = &smsc911x_platdata,
},

4
arch/arm/mach-shmobile/intc-sh73a0.c
View File

@ -259,9 +259,9 @@ static int sh73a0_set_wake(struct irq_data *data, unsigned int on)
return 0; /* always allow wakeup */
}
#define RELOC_BASE 0x1000
#define RELOC_BASE 0x1200
/* INTCA IRQ pins at INTCS + 0x1000 to make space for GIC+INTC handling */
/* INTCA IRQ pins at INTCS + RELOC_BASE to make space for GIC+INTC handling */
#define INTCS_VECT_RELOC(n, vect) INTCS_VECT((n), (vect) + RELOC_BASE)
INTC_IRQ_PINS_32(intca_irq_pins, 0xe6900000,

7
arch/arm/mm/context.c
View File

@ -63,10 +63,11 @@ static int contextidr_notifier(struct notifier_block *unused, unsigned long cmd,
pid = task_pid_nr(thread->task) << ASID_BITS;
asm volatile(
" mrc p15, 0, %0, c13, c0, 1\n"
" bfi %1, %0, #0, %2\n"
" mcr p15, 0, %1, c13, c0, 1\n"
" and %0, %0, %2\n"
" orr %0, %0, %1\n"
" mcr p15, 0, %0, c13, c0, 1\n"
: "=r" (contextidr), "+r" (pid)
: "I" (ASID_BITS));
: "I" (~ASID_MASK));
isb();
return NOTIFY_OK;

114
arch/arm/mm/dma-mapping.c
View File

@ -267,17 +267,19 @@ static void __dma_free_remap(void *cpu_addr, size_t size)
vunmap(cpu_addr);
}
#define DEFAULT_DMA_COHERENT_POOL_SIZE SZ_256K
struct dma_pool {
size_t size;
spinlock_t lock;
unsigned long *bitmap;
unsigned long nr_pages;
void *vaddr;
struct page *page;
struct page **pages;
};
static struct dma_pool atomic_pool = {
.size = SZ_256K,
.size = DEFAULT_DMA_COHERENT_POOL_SIZE,
};
static int __init early_coherent_pool(char *p)
@ -287,6 +289,21 @@ static int __init early_coherent_pool(char *p)
}
early_param("coherent_pool", early_coherent_pool);
void __init init_dma_coherent_pool_size(unsigned long size)
{
/*
* Catch any attempt to set the pool size too late.
*/
BUG_ON(atomic_pool.vaddr);
/*
* Set architecture specific coherent pool size only if
* it has not been changed by kernel command line parameter.
*/
if (atomic_pool.size == DEFAULT_DMA_COHERENT_POOL_SIZE)
atomic_pool.size = size;
}
/*
* Initialise the coherent pool for atomic allocations.
*/
@ -297,6 +314,7 @@ static int __init atomic_pool_init(void)
unsigned long nr_pages = pool->size >> PAGE_SHIFT;
unsigned long *bitmap;
struct page *page;
struct page **pages;
void *ptr;
int bitmap_size = BITS_TO_LONGS(nr_pages) * sizeof(long);
@ -304,21 +322,31 @@ static int __init atomic_pool_init(void)
if (!bitmap)
goto no_bitmap;
pages = kzalloc(nr_pages * sizeof(struct page *), GFP_KERNEL);
if (!pages)
goto no_pages;
if (IS_ENABLED(CONFIG_CMA))
ptr = __alloc_from_contiguous(NULL, pool->size, prot, &page);
else
ptr = __alloc_remap_buffer(NULL, pool->size, GFP_KERNEL, prot,
&page, NULL);
if (ptr) {
int i;
for (i = 0; i < nr_pages; i++)
pages[i] = page + i;
spin_lock_init(&pool->lock);
pool->vaddr = ptr;
pool->page = page;
pool->pages = pages;
pool->bitmap = bitmap;
pool->nr_pages = nr_pages;
pr_info("DMA: preallocated %u KiB pool for atomic coherent allocations\n",
(unsigned)pool->size / 1024);
return 0;
}
no_pages:
kfree(bitmap);
no_bitmap:
pr_err("DMA: failed to allocate %u KiB pool for atomic coherent allocation\n",
@ -443,27 +471,45 @@ static void *__alloc_from_pool(size_t size, struct page **ret_page)
if (pageno < pool->nr_pages) {
bitmap_set(pool->bitmap, pageno, count);
ptr = pool->vaddr + PAGE_SIZE * pageno;
*ret_page = pool->page + pageno;
*ret_page = pool->pages[pageno];
} else {
pr_err_once("ERROR: %u KiB atomic DMA coherent pool is too small!\n"
"Please increase it with coherent_pool= kernel parameter!\n",
(unsigned)pool->size / 1024);
}
spin_unlock_irqrestore(&pool->lock, flags);
return ptr;
}
static bool __in_atomic_pool(void *start, size_t size)
{
struct dma_pool *pool = &atomic_pool;
void *end = start + size;
void *pool_start = pool->vaddr;
void *pool_end = pool->vaddr + pool->size;
if (start < pool_start || start >= pool_end)
return false;
if (end <= pool_end)
return true;
WARN(1, "Wrong coherent size(%p-%p) from atomic pool(%p-%p)\n",
start, end - 1, pool_start, pool_end - 1);
return false;
}
static int __free_from_pool(void *start, size_t size)
{
struct dma_pool *pool = &atomic_pool;
unsigned long pageno, count;
unsigned long flags;
if (start < pool->vaddr || start > pool->vaddr + pool->size)
if (!__in_atomic_pool(start, size))
return 0;
if (start + size > pool->vaddr + pool->size) {
WARN(1, "freeing wrong coherent size from pool\n");
return 0;
}
pageno = (start - pool->vaddr) >> PAGE_SHIFT;
count = size >> PAGE_SHIFT;
@ -1090,10 +1136,22 @@ static int __iommu_remove_mapping(struct device *dev, dma_addr_t iova, size_t si
return 0;
}
static struct page **__atomic_get_pages(void *addr)
{
struct dma_pool *pool = &atomic_pool;
struct page **pages = pool->pages;
int offs = (addr - pool->vaddr) >> PAGE_SHIFT;
return pages + offs;
}
static struct page **__iommu_get_pages(void *cpu_addr, struct dma_attrs *attrs)
{
struct vm_struct *area;
if (__in_atomic_pool(cpu_addr, PAGE_SIZE))
return __atomic_get_pages(cpu_addr);
if (dma_get_attr(DMA_ATTR_NO_KERNEL_MAPPING, attrs))
return cpu_addr;
@ -1103,6 +1161,34 @@ static struct page **__iommu_get_pages(void *cpu_addr, struct dma_attrs *attrs)
return NULL;
}
static void *__iommu_alloc_atomic(struct device *dev, size_t size,
dma_addr_t *handle)
{
struct page *page;
void *addr;
addr = __alloc_from_pool(size, &page);
if (!addr)
return NULL;
*handle = __iommu_create_mapping(dev, &page, size);
if (*handle == DMA_ERROR_CODE)
goto err_mapping;
return addr;
err_mapping:
__free_from_pool(addr, size);
return NULL;
}
static void __iommu_free_atomic(struct device *dev, struct page **pages,
dma_addr_t handle, size_t size)
{
__iommu_remove_mapping(dev, handle, size);
__free_from_pool(page_address(pages[0]), size);
}
static void *arm_iommu_alloc_attrs(struct device *dev, size_t size,
dma_addr_t *handle, gfp_t gfp, struct dma_attrs *attrs)
{
@ -1113,6 +1199,9 @@ static void *arm_iommu_alloc_attrs(struct device *dev, size_t size,
*handle = DMA_ERROR_CODE;
size = PAGE_ALIGN(size);
if (gfp & GFP_ATOMIC)
return __iommu_alloc_atomic(dev, size, handle);
pages = __iommu_alloc_buffer(dev, size, gfp);
if (!pages)
return NULL;
@ -1179,6 +1268,11 @@ void arm_iommu_free_attrs(struct device *dev, size_t size, void *cpu_addr,
return;
}
if (__in_atomic_pool(cpu_addr, size)) {
__iommu_free_atomic(dev, pages, handle, size);
return;
}
if (!dma_get_attr(DMA_ATTR_NO_KERNEL_MAPPING, attrs)) {
unmap_kernel_range((unsigned long)cpu_addr, size);
vunmap(cpu_addr);

3
arch/arm/mm/mm.h
View File

@ -55,6 +55,9 @@ extern void __flush_dcache_page(struct address_space *mapping, struct page *page
/* permanent static mappings from iotable_init() */
#define VM_ARM_STATIC_MAPPING 0x40000000
/* empty mapping */
#define VM_ARM_EMPTY_MAPPING 0x20000000
/* mapping type (attributes) for permanent static mappings */
#define VM_ARM_MTYPE(mt) ((mt) << 20)
#define VM_ARM_MTYPE_MASK (0x1f << 20)

8
arch/arm/mm/mmu.c
View File

@ -807,7 +807,7 @@ static void __init pmd_empty_section_gap(unsigned long addr)
vm = early_alloc_aligned(sizeof(*vm), __alignof__(*vm));
vm->addr = (void *)addr;
vm->size = SECTION_SIZE;
vm->flags = VM_IOREMAP | VM_ARM_STATIC_MAPPING;
vm->flags = VM_IOREMAP | VM_ARM_EMPTY_MAPPING;
vm->caller = pmd_empty_section_gap;
vm_area_add_early(vm);
}
@ -820,7 +820,7 @@ static void __init fill_pmd_gaps(void)
/* we're still single threaded hence no lock needed here */
for (vm = vmlist; vm; vm = vm->next) {
if (!(vm->flags & VM_ARM_STATIC_MAPPING))
if (!(vm->flags & (VM_ARM_STATIC_MAPPING | VM_ARM_EMPTY_MAPPING)))
continue;
addr = (unsigned long)vm->addr;
if (addr < next)
@ -961,8 +961,8 @@ void __init sanity_check_meminfo(void)
* Check whether this memory bank would partially overlap
* the vmalloc area.
*/
if (__va(bank->start + bank->size) > vmalloc_min ||
__va(bank->start + bank->size) < __va(bank->start)) {
if (__va(bank->start + bank->size - 1) >= vmalloc_min ||
__va(bank->start + bank->size - 1) <= __va(bank->start)) {
unsigned long newsize = vmalloc_min - __va(bank->start);
printk(KERN_NOTICE "Truncating RAM at %.8llx-%.8llx "
"to -%.8llx (vmalloc region overlap).\n",

1
arch/arm/plat-mxc/include/mach/mx25.h
View File

@ -98,6 +98,7 @@
#define MX25_INT_UART1 (NR_IRQS_LEGACY + 45)
#define MX25_INT_GPIO2 (NR_IRQS_LEGACY + 51)
#define MX25_INT_GPIO1 (NR_IRQS_LEGACY + 52)
#define MX25_INT_GPT1 (NR_IRQS_LEGACY + 54)
#define MX25_INT_FEC (NR_IRQS_LEGACY + 57)
#define MX25_DMA_REQ_SSI2_RX1 22

11
arch/arm/plat-omap/sram.c
View File

@ -68,6 +68,7 @@
static unsigned long omap_sram_start;
static void __iomem *omap_sram_base;
static unsigned long omap_sram_skip;
static unsigned long omap_sram_size;
static void __iomem *omap_sram_ceil;
@ -106,6 +107,7 @@ static int is_sram_locked(void)
*/
static void __init omap_detect_sram(void)
{
omap_sram_skip = SRAM_BOOTLOADER_SZ;
if (cpu_class_is_omap2()) {
if (is_sram_locked()) {
if (cpu_is_omap34xx()) {
@ -113,6 +115,7 @@ static void __init omap_detect_sram(void)
if ((omap_type() == OMAP2_DEVICE_TYPE_EMU) ||
(omap_type() == OMAP2_DEVICE_TYPE_SEC)) {
omap_sram_size = 0x7000; /* 28K */
omap_sram_skip += SZ_16K;
} else {
omap_sram_size = 0x8000; /* 32K */
}
@ -175,8 +178,10 @@ static void __init omap_map_sram(void)
return;
#ifdef CONFIG_OMAP4_ERRATA_I688
if (cpu_is_omap44xx()) {
omap_sram_start += PAGE_SIZE;
omap_sram_size -= SZ_16K;
}
#endif
if (cpu_is_omap34xx()) {
/*
@ -203,8 +208,8 @@ static void __init omap_map_sram(void)
* Looks like we need to preserve some bootloader code at the
* beginning of SRAM for jumping to flash for reboot to work...
*/
memset_io(omap_sram_base + SRAM_BOOTLOADER_SZ, 0,
omap_sram_size - SRAM_BOOTLOADER_SZ);
memset_io(omap_sram_base + omap_sram_skip, 0,
omap_sram_size - omap_sram_skip);
}
/*
@ -218,7 +223,7 @@ void *omap_sram_push_address(unsigned long size)
{
unsigned long available, new_ceil = (unsigned long)omap_sram_ceil;
available = omap_sram_ceil - (omap_sram_base + SRAM_BOOTLOADER_SZ);
available = omap_sram_ceil - (omap_sram_base + omap_sram_skip);
if (size > available) {
pr_err("Not enough space in SRAM\n");

10
arch/arm/plat-samsung/clock.c
View File

@ -144,6 +144,7 @@ long clk_round_rate(struct clk *clk, unsigned long rate)
int clk_set_rate(struct clk *clk, unsigned long rate)
{
unsigned long flags;
int ret;
if (IS_ERR(clk))
@ -159,9 +160,9 @@ int clk_set_rate(struct clk *clk, unsigned long rate)
if (clk->ops == NULL || clk->ops->set_rate == NULL)
return -EINVAL;
spin_lock(&clocks_lock);
spin_lock_irqsave(&clocks_lock, flags);
ret = (clk->ops->set_rate)(clk, rate);
spin_unlock(&clocks_lock);
spin_unlock_irqrestore(&clocks_lock, flags);
return ret;
}
@ -173,17 +174,18 @@ struct clk *clk_get_parent(struct clk *clk)
int clk_set_parent(struct clk *clk, struct clk *parent)
{
unsigned long flags;
int ret = 0;
if (IS_ERR(clk))
return -EINVAL;
spin_lock(&clocks_lock);
spin_lock_irqsave(&clocks_lock, flags);
if (clk->ops && clk->ops->set_parent)
ret = (clk->ops->set_parent)(clk, parent);
spin_unlock(&clocks_lock);
spin_unlock_irqrestore(&clocks_lock, flags);
return ret;
}

1
arch/blackfin/Kconfig
View File

@ -38,6 +38,7 @@ config BLACKFIN
select GENERIC_ATOMIC64
select GENERIC_IRQ_PROBE
select IRQ_PER_CPU if SMP
select USE_GENERIC_SMP_HELPERS if SMP
select HAVE_NMI_WATCHDOG if NMI_WATCHDOG
select GENERIC_SMP_IDLE_THREAD
select ARCH_USES_GETTIMEOFFSET if !GENERIC_CLOCKEVENTS

1
arch/blackfin/Makefile
View File

@ -20,7 +20,6 @@ endif
KBUILD_AFLAGS += $(call cc-option,-mno-fdpic)
KBUILD_CFLAGS_MODULE += -mlong-calls
LDFLAGS += -m elf32bfin
KALLSYMS += --symbol-prefix=_
KBUILD_DEFCONFIG := BF537-STAMP_defconfig

2
arch/blackfin/include/asm/smp.h
View File

@ -18,6 +18,8 @@
#define raw_smp_processor_id() blackfin_core_id()
extern void bfin_relocate_coreb_l1_mem(void);
extern void arch_send_call_function_single_ipi(int cpu);
extern void arch_send_call_function_ipi_mask(const struct cpumask *mask);
#if defined(CONFIG_SMP) && defined(CONFIG_ICACHE_FLUSH_L1)
asmlinkage void blackfin_icache_flush_range_l1(unsigned long *ptr);

217
arch/blackfin/mach-common/smp.c
View File

@ -48,10 +48,13 @@ unsigned long blackfin_iflush_l1_entry[NR_CPUS];
struct blackfin_initial_pda __cpuinitdata initial_pda_coreb;
#define BFIN_IPI_TIMER 0
#define BFIN_IPI_RESCHEDULE 1
#define BFIN_IPI_CALL_FUNC 2
#define BFIN_IPI_CPU_STOP 3
enum ipi_message_type {
BFIN_IPI_TIMER,
BFIN_IPI_RESCHEDULE,
BFIN_IPI_CALL_FUNC,
BFIN_IPI_CALL_FUNC_SINGLE,
BFIN_IPI_CPU_STOP,
};
struct blackfin_flush_data {
unsigned long start;
@ -60,35 +63,20 @@ struct blackfin_flush_data {
void *secondary_stack;
struct smp_call_struct {
void (*func)(void *info);
void *info;
int wait;
cpumask_t *waitmask;
};
static struct blackfin_flush_data smp_flush_data;
static DEFINE_SPINLOCK(stop_lock);
struct ipi_message {
unsigned long type;
struct smp_call_struct call_struct;
};
/* A magic number - stress test shows this is safe for common cases */
#define BFIN_IPI_MSGQ_LEN 5
/* Simple FIFO buffer, overflow leads to panic */
struct ipi_message_queue {
spinlock_t lock;
struct ipi_data {
unsigned long count;
unsigned long head; /* head of the queue */
struct ipi_message ipi_message[BFIN_IPI_MSGQ_LEN];
unsigned long bits;
};
static DEFINE_PER_CPU(struct ipi_message_queue, ipi_msg_queue);
static DEFINE_PER_CPU(struct ipi_data, bfin_ipi);
static void ipi_cpu_stop(unsigned int cpu)
{
@ -129,28 +117,6 @@ static void ipi_flush_icache(void *info)
blackfin_icache_flush_range(fdata->start, fdata->end);
}
static void ipi_call_function(unsigned int cpu, struct ipi_message *msg)
{
int wait;
void (*func)(void *info);
void *info;
func = msg->call_struct.func;
info = msg->call_struct.info;
wait = msg->call_struct.wait;
func(info);
if (wait) {
#ifdef __ARCH_SYNC_CORE_DCACHE
/*
* 'wait' usually means synchronization between CPUs.
* Invalidate D cache in case shared data was changed
* by func() to ensure cache coherence.
*/
resync_core_dcache();
#endif
cpumask_clear_cpu(cpu, msg->call_struct.waitmask);
}
}
/* Use IRQ_SUPPLE_0 to request reschedule.
* When returning from interrupt to user space,
* there is chance to reschedule */
@ -172,152 +138,95 @@ void ipi_timer(void)
static irqreturn_t ipi_handler_int1(int irq, void *dev_instance)
{
struct ipi_message *msg;
struct ipi_message_queue *msg_queue;
struct ipi_data *bfin_ipi_data;
unsigned int cpu = smp_processor_id();
unsigned long flags;
unsigned long pending;
unsigned long msg;
platform_clear_ipi(cpu, IRQ_SUPPLE_1);
msg_queue = &__get_cpu_var(ipi_msg_queue);
bfin_ipi_data = &__get_cpu_var(bfin_ipi);
spin_lock_irqsave(&msg_queue->lock, flags);
while ((pending = xchg(&bfin_ipi_data->bits, 0)) != 0) {
msg = 0;
do {
msg = find_next_bit(&pending, BITS_PER_LONG, msg + 1);
switch (msg) {
case BFIN_IPI_TIMER:
ipi_timer();
break;
case BFIN_IPI_RESCHEDULE:
scheduler_ipi();
break;
case BFIN_IPI_CALL_FUNC:
generic_smp_call_function_interrupt();
break;
while (msg_queue->count) {
msg = &msg_queue->ipi_message[msg_queue->head];
switch (msg->type) {
case BFIN_IPI_TIMER:
ipi_timer();
break;
case BFIN_IPI_RESCHEDULE:
scheduler_ipi();
break;
case BFIN_IPI_CALL_FUNC:
ipi_call_function(cpu, msg);
break;
case BFIN_IPI_CPU_STOP:
ipi_cpu_stop(cpu);
break;
default:
printk(KERN_CRIT "CPU%u: Unknown IPI message 0x%lx\n",
cpu, msg->type);
break;
}
msg_queue->head++;
msg_queue->head %= BFIN_IPI_MSGQ_LEN;
msg_queue->count--;
case BFIN_IPI_CALL_FUNC_SINGLE:
generic_smp_call_function_single_interrupt();
break;
case BFIN_IPI_CPU_STOP:
ipi_cpu_stop(cpu);
break;
}
} while (msg < BITS_PER_LONG);
smp_mb();
}
spin_unlock_irqrestore(&msg_queue->lock, flags);
return IRQ_HANDLED;
}
static void ipi_queue_init(void)
static void bfin_ipi_init(void)
{
unsigned int cpu;
struct ipi_message_queue *msg_queue;
struct ipi_data *bfin_ipi_data;
for_each_possible_cpu(cpu) {
msg_queue = &per_cpu(ipi_msg_queue, cpu);
spin_lock_init(&msg_queue->lock);
msg_queue->count = 0;
msg_queue->head = 0;
bfin_ipi_data = &per_cpu(bfin_ipi, cpu);
bfin_ipi_data->bits = 0;
bfin_ipi_data->count = 0;
}
}
static inline void smp_send_message(cpumask_t callmap, unsigned long type,
void (*func) (void *info), void *info, int wait)
void send_ipi(const struct cpumask *cpumask, enum ipi_message_type msg)
{
unsigned int cpu;
struct ipi_message_queue *msg_queue;
struct ipi_message *msg;
unsigned long flags, next_msg;
cpumask_t waitmask; /* waitmask is shared by all cpus */
struct ipi_data *bfin_ipi_data;
unsigned long flags;
cpumask_copy(&waitmask, &callmap);
for_each_cpu(cpu, &callmap) {
msg_queue = &per_cpu(ipi_msg_queue, cpu);
spin_lock_irqsave(&msg_queue->lock, flags);
if (msg_queue->count < BFIN_IPI_MSGQ_LEN) {
next_msg = (msg_queue->head + msg_queue->count)
% BFIN_IPI_MSGQ_LEN;
msg = &msg_queue->ipi_message[next_msg];
msg->type = type;
if (type == BFIN_IPI_CALL_FUNC) {
msg->call_struct.func = func;
msg->call_struct.info = info;
msg->call_struct.wait = wait;
msg->call_struct.waitmask = &waitmask;
}
msg_queue->count++;
} else
panic("IPI message queue overflow\n");
spin_unlock_irqrestore(&msg_queue->lock, flags);
local_irq_save(flags);
for_each_cpu(cpu, cpumask) {
bfin_ipi_data = &per_cpu(bfin_ipi, cpu);
smp_mb();
set_bit(msg, &bfin_ipi_data->bits);
bfin_ipi_data->count++;
platform_send_ipi_cpu(cpu, IRQ_SUPPLE_1);
}
if (wait) {
while (!cpumask_empty(&waitmask))
blackfin_dcache_invalidate_range(
(unsigned long)(&waitmask),
(unsigned long)(&waitmask));
#ifdef __ARCH_SYNC_CORE_DCACHE
/*
* Invalidate D cache in case shared data was changed by
* other processors to ensure cache coherence.
*/
resync_core_dcache();
#endif
}
local_irq_restore(flags);
}
int smp_call_function(void (*func)(void *info), void *info, int wait)
void arch_send_call_function_single_ipi(int cpu)
{
cpumask_t callmap;
preempt_disable();
cpumask_copy(&callmap, cpu_online_mask);
cpumask_clear_cpu(smp_processor_id(), &callmap);
if (!cpumask_empty(&callmap))
smp_send_message(callmap, BFIN_IPI_CALL_FUNC, func, info, wait);
preempt_enable();
return 0;
send_ipi(cpumask_of(cpu), BFIN_IPI_CALL_FUNC_SINGLE);
}
EXPORT_SYMBOL_GPL(smp_call_function);
int smp_call_function_single(int cpuid, void (*func) (void *info), void *info,
int wait)
void arch_send_call_function_ipi_mask(const struct cpumask *mask)
{
unsigned int cpu = cpuid;
cpumask_t callmap;
if (cpu_is_offline(cpu))
return 0;
cpumask_clear(&callmap);
cpumask_set_cpu(cpu, &callmap);
smp_send_message(callmap, BFIN_IPI_CALL_FUNC, func, info, wait);
return 0;
send_ipi(mask, BFIN_IPI_CALL_FUNC);
}
EXPORT_SYMBOL_GPL(smp_call_function_single);
void smp_send_reschedule(int cpu)
{
cpumask_t callmap;
/* simply trigger an ipi */
cpumask_clear(&callmap);
cpumask_set_cpu(cpu, &callmap);
smp_send_message(callmap, BFIN_IPI_RESCHEDULE, NULL, NULL, 0);
send_ipi(cpumask_of(cpu), BFIN_IPI_RESCHEDULE);
return;
}
void smp_send_msg(const struct cpumask *mask, unsigned long type)
{
smp_send_message(*mask, type, NULL, NULL, 0);
send_ipi(mask, type);
}
void smp_timer_broadcast(const struct cpumask *mask)
@ -333,7 +242,7 @@ void smp_send_stop(void)
cpumask_copy(&callmap, cpu_online_mask);
cpumask_clear_cpu(smp_processor_id(), &callmap);
if (!cpumask_empty(&callmap))
smp_send_message(callmap, BFIN_IPI_CPU_STOP, NULL, NULL, 0);
send_ipi(&callmap, BFIN_IPI_CPU_STOP);
preempt_enable();
@ -436,7 +345,7 @@ void __init smp_prepare_boot_cpu(void)
void __init smp_prepare_cpus(unsigned int max_cpus)
{
platform_prepare_cpus(max_cpus);
ipi_queue_init();
bfin_ipi_init();
platform_request_ipi(IRQ_SUPPLE_0, ipi_handler_int0);
platform_request_ipi(IRQ_SUPPLE_1, ipi_handler_int1);
}

6
arch/m68k/platform/coldfire/clk.c
View File

@ -146,9 +146,3 @@ struct clk_ops clk_ops1 = {
};
#endif /* MCFPM_PPMCR1 */
#endif /* MCFPM_PPMCR0 */
struct clk *devm_clk_get(struct device *dev, const char *id)
{
return NULL;
}
EXPORT_SYMBOL(devm_clk_get);

2
arch/mips/kernel/smp-cmp.c
View File

@ -102,7 +102,7 @@ static void cmp_init_secondary(void)
c->vpe_id = (read_c0_tcbind() >> TCBIND_CURVPE_SHIFT) & TCBIND_CURVPE;
#endif
#ifdef CONFIG_MIPS_MT_SMTC
c->tc_id = (read_c0_tcbind() >> TCBIND_CURTC_SHIFT) & TCBIND_CURTC;
c->tc_id = (read_c0_tcbind() & TCBIND_CURTC) >> TCBIND_CURTC_SHIFT;
#endif
}

2
arch/mips/mm/gup.c
View File

@ -152,6 +152,8 @@ static int gup_huge_pud(pud_t pud, unsigned long addr, unsigned long end,
do {
VM_BUG_ON(compound_head(page) != head);
pages[*nr] = page;
if (PageTail(page))
get_huge_page_tail(page);
(*nr)++;
page++;
refs++;

9
arch/mips/mti-malta/malta-int.c
View File

@ -273,16 +273,19 @@ asmlinkage void plat_irq_dispatch(void)
unsigned int pending = read_c0_cause() & read_c0_status() & ST0_IM;
int irq;
if (unlikely(!pending)) {
spurious_interrupt();
return;
}
irq = irq_ffs(pending);
if (irq == MIPSCPU_INT_I8259A)
malta_hw0_irqdispatch();
else if (gic_present && ((1 << irq) & ipi_map[smp_processor_id()]))
malta_ipi_irqdispatch();
else if (irq >= 0)
do_IRQ(MIPS_CPU_IRQ_BASE + irq);
else
spurious_interrupt();
do_IRQ(MIPS_CPU_IRQ_BASE + irq);
}
#ifdef CONFIG_MIPS_MT_SMP

5
arch/mips/mti-malta/malta-platform.c
View File

@ -138,11 +138,6 @@ static int __init malta_add_devices(void)
if (err)
return err;
/*
* Set RTC to BCD mode to support current alarm code.
*/
CMOS_WRITE(CMOS_READ(RTC_CONTROL) & ~RTC_DM_BINARY, RTC_CONTROL);
return 0;
}

4
arch/parisc/include/asm/atomic.h
View File

@ -141,7 +141,7 @@ static __inline__ int __atomic_add_unless(atomic_t *v, int a, int u)
#define atomic_sub_and_test(i,v) (atomic_sub_return((i),(v)) == 0)
#define ATOMIC_INIT(i) ((atomic_t) { (i) })
#define ATOMIC_INIT(i) { (i) }
#define smp_mb__before_atomic_dec() smp_mb()
#define smp_mb__after_atomic_dec() smp_mb()
@ -150,7 +150,7 @@ static __inline__ int __atomic_add_unless(atomic_t *v, int a, int u)
#ifdef CONFIG_64BIT
#define ATOMIC64_INIT(i) ((atomic64_t) { (i) })
#define ATOMIC64_INIT(i) { (i) }
static __inline__ s64
__atomic64_add_return(s64 i, atomic64_t *v)

2
arch/parisc/kernel/process.c
View File

@ -309,7 +309,7 @@ copy_thread(unsigned long clone_flags, unsigned long usp,
cregs->ksp = (unsigned long)stack
+ (pregs->gr[21] & (THREAD_SIZE - 1));
cregs->gr[30] = usp;
if (p->personality == PER_HPUX) {
if (personality(p->personality) == PER_HPUX) {
#ifdef CONFIG_HPUX
cregs->kpc = (unsigned long) &hpux_child_return;
#else

8
arch/parisc/kernel/sys_parisc.c
View File

@ -225,12 +225,12 @@ long parisc_personality(unsigned long personality)
long err;
if (personality(current->personality) == PER_LINUX32
&& personality == PER_LINUX)
personality = PER_LINUX32;
&& personality(personality) == PER_LINUX)
personality = (personality & ~PER_MASK) | PER_LINUX32;
err = sys_personality(personality);
if (err == PER_LINUX32)
err = PER_LINUX;
if (personality(err) == PER_LINUX32)
err = (err & ~PER_MASK) | PER_LINUX;
return err;
}

1
arch/powerpc/include/asm/processor.h
View File

@ -386,6 +386,7 @@ extern unsigned long cpuidle_disable;
enum idle_boot_override {IDLE_NO_OVERRIDE = 0, IDLE_POWERSAVE_OFF};
extern int powersave_nap; /* set if nap mode can be used in idle loop */
extern void power7_nap(void);
#ifdef CONFIG_PSERIES_IDLE
extern void update_smt_snooze_delay(int snooze);

1
arch/powerpc/kernel/asm-offsets.c
View File

@ -76,6 +76,7 @@ int main(void)
DEFINE(SIGSEGV, SIGSEGV);
DEFINE(NMI_MASK, NMI_MASK);
DEFINE(THREAD_DSCR, offsetof(struct thread_struct, dscr));
DEFINE(THREAD_DSCR_INHERIT, offsetof(struct thread_struct, dscr_inherit));
#else
DEFINE(THREAD_INFO, offsetof(struct task_struct, stack));
#endif /* CONFIG_PPC64 */

2
arch/powerpc/kernel/dbell.c
View File

@ -28,6 +28,8 @@ void doorbell_setup_this_cpu(void)
void doorbell_cause_ipi(int cpu, unsigned long data)
{
/* Order previous accesses vs. msgsnd, which is treated as a store */
mb();
ppc_msgsnd(PPC_DBELL, 0, data);
}

23
arch/powerpc/kernel/entry_64.S
View File

@ -370,6 +370,12 @@ _GLOBAL(ret_from_fork)
li r3,0
b syscall_exit
.section ".toc","aw"
DSCR_DEFAULT:
.tc dscr_default[TC],dscr_default
.section ".text"
/*
* This routine switches between two different tasks. The process
* state of one is saved on its kernel stack. Then the state
@ -509,9 +515,6 @@ END_MMU_FTR_SECTION_IFSET(MMU_FTR_1T_SEGMENT)
mr r1,r8 /* start using new stack pointer */
std r7,PACAKSAVE(r13)
ld r6,_CCR(r1)
mtcrf 0xFF,r6
#ifdef CONFIG_ALTIVEC
BEGIN_FTR_SECTION
ld r0,THREAD_VRSAVE(r4)
@ -520,14 +523,22 @@ END_FTR_SECTION_IFSET(CPU_FTR_ALTIVEC)
#endif /* CONFIG_ALTIVEC */
#ifdef CONFIG_PPC64
BEGIN_FTR_SECTION
lwz r6,THREAD_DSCR_INHERIT(r4)
ld r7,DSCR_DEFAULT@toc(2)
ld r0,THREAD_DSCR(r4)
cmpd r0,r25
beq 1f
cmpwi r6,0
bne 1f
ld r0,0(r7)
1: cmpd r0,r25
beq 2f
mtspr SPRN_DSCR,r0
1:
2:
END_FTR_SECTION_IFSET(CPU_FTR_DSCR)
#endif
ld r6,_CCR(r1)
mtcrf 0xFF,r6
/* r3-r13 are destroyed -- Cort */
REST_8GPRS(14, r1)
REST_10GPRS(22, r1)

3
arch/powerpc/kernel/exceptions-64s.S
View File

@ -186,7 +186,7 @@ hardware_interrupt_hv:
KVM_HANDLER_PR(PACA_EXGEN, EXC_STD, 0x800)
MASKABLE_EXCEPTION_PSERIES(0x900, 0x900, decrementer)
MASKABLE_EXCEPTION_HV(0x980, 0x982, decrementer)
STD_EXCEPTION_HV(0x980, 0x982, hdecrementer)
STD_EXCEPTION_PSERIES(0xa00, 0xa00, trap_0a)
KVM_HANDLER_PR(PACA_EXGEN, EXC_STD, 0xa00)
@ -486,6 +486,7 @@ machine_check_common:
STD_EXCEPTION_COMMON_ASYNC(0x500, hardware_interrupt, do_IRQ)
STD_EXCEPTION_COMMON_ASYNC(0x900, decrementer, .timer_interrupt)
STD_EXCEPTION_COMMON(0x980, hdecrementer, .hdec_interrupt)
STD_EXCEPTION_COMMON(0xa00, trap_0a, .unknown_exception)
STD_EXCEPTION_COMMON(0xb00, trap_0b, .unknown_exception)
STD_EXCEPTION_COMMON(0xd00, single_step, .single_step_exception)

2
arch/powerpc/kernel/idle_power7.S
View File

@ -28,7 +28,9 @@ _GLOBAL(power7_idle)
lwz r4,ADDROFF(powersave_nap)(r3)
cmpwi 0,r4,0
beqlr
/* fall through */
_GLOBAL(power7_nap)
/* NAP is a state loss, we create a regs frame on the
* stack, fill it up with the state we care about and
* stick a pointer to it in PACAR1. We really only

12
arch/powerpc/kernel/process.c
View File

@ -802,16 +802,8 @@ int copy_thread(unsigned long clone_flags, unsigned long usp,
#endif /* CONFIG_PPC_STD_MMU_64 */
#ifdef CONFIG_PPC64
if (cpu_has_feature(CPU_FTR_DSCR)) {
if (current->thread.dscr_inherit) {
p->thread.dscr_inherit = 1;
p->thread.dscr = current->thread.dscr;
} else if (0 != dscr_default) {
p->thread.dscr_inherit = 1;
p->thread.dscr = dscr_default;
} else {
p->thread.dscr_inherit = 0;
p->thread.dscr = 0;
}
p->thread.dscr_inherit = current->thread.dscr_inherit;
p->thread.dscr = current->thread.dscr;
}
#endif

11
arch/powerpc/kernel/smp.c
View File

@ -198,8 +198,15 @@ void smp_muxed_ipi_message_pass(int cpu, int msg)
struct cpu_messages *info = &per_cpu(ipi_message, cpu);
char *message = (char *)&info->messages;
/*
* Order previous accesses before accesses in the IPI handler.
*/
smp_mb();
message[msg] = 1;
mb();
/*
* cause_ipi functions are required to include a full barrier
* before doing whatever causes the IPI.
*/
smp_ops->cause_ipi(cpu, info->data);
}
@ -211,7 +218,7 @@ irqreturn_t smp_ipi_demux(void)
mb(); /* order any irq clear */
do {
all = xchg_local(&info->messages, 0);
all = xchg(&info->messages, 0);
#ifdef __BIG_ENDIAN
if (all & (1 << (24 - 8 * PPC_MSG_CALL_FUNCTION)))

10
arch/powerpc/kernel/sysfs.c
View File

@ -194,6 +194,14 @@ static ssize_t show_dscr_default(struct device *dev,
return sprintf(buf, "%lx\n", dscr_default);
}
static void update_dscr(void *dummy)
{
if (!current->thread.dscr_inherit) {
current->thread.dscr = dscr_default;
mtspr(SPRN_DSCR, dscr_default);
}
}
static ssize_t __used store_dscr_default(struct device *dev,
struct device_attribute *attr, const char *buf,
size_t count)
@ -206,6 +214,8 @@ static ssize_t __used store_dscr_default(struct device *dev,
return -EINVAL;
dscr_default = val;
on_each_cpu(update_dscr, NULL, 1);
return count;
}

9
arch/powerpc/kernel/time.c
View File

@ -535,6 +535,15 @@ void timer_interrupt(struct pt_regs * regs)
trace_timer_interrupt_exit(regs);
}
/*
* Hypervisor decrementer interrupts shouldn't occur but are sometimes
* left pending on exit from a KVM guest. We don't need to do anything
* to clear them, as they are edge-triggered.
*/
void hdec_interrupt(struct pt_regs *regs)
{
}
#ifdef CONFIG_SUSPEND
static void generic_suspend_disable_irqs(void)
{

3
arch/powerpc/kernel/traps.c
View File

@ -972,8 +972,9 @@ static int emulate_instruction(struct pt_regs *regs)
cpu_has_feature(CPU_FTR_DSCR)) {
PPC_WARN_EMULATED(mtdscr, regs);
rd = (instword >> 21) & 0x1f;
mtspr(SPRN_DSCR, regs->gpr[rd]);
current->thread.dscr = regs->gpr[rd];
current->thread.dscr_inherit = 1;
mtspr(SPRN_DSCR, current->thread.dscr);
return 0;
}
#endif

2
arch/powerpc/lib/code-patching.c
View File

@ -20,7 +20,7 @@ int patch_instruction(unsigned int *addr, unsigned int instr)
{
int err;
err = __put_user(instr, addr);
__put_user_size(instr, addr, 4, err);
if (err)
return err;
asm ("dcbst 0, %0; sync; icbi 0,%0; sync; isync" : : "r" (addr));

7
arch/powerpc/mm/numa.c
View File

@ -1436,11 +1436,11 @@ static long vphn_get_associativity(unsigned long cpu,
/*
* Update the node maps and sysfs entries for each cpu whose home node
* has changed.
* has changed. Returns 1 when the topology has changed, and 0 otherwise.
*/
int arch_update_cpu_topology(void)
{
int cpu, nid, old_nid;
int cpu, nid, old_nid, changed = 0;
unsigned int associativity[VPHN_ASSOC_BUFSIZE] = {0};
struct device *dev;
@ -1466,9 +1466,10 @@ int arch_update_cpu_topology(void)
dev = get_cpu_device(cpu);
if (dev)
kobject_uevent(&dev->kobj, KOBJ_CHANGE);
changed = 1;
}
return 1;
return changed;
}
static void topology_work_fn(struct work_struct *work)

10
arch/powerpc/platforms/powernv/smp.c
View File

@ -106,14 +106,6 @@ static void pnv_smp_cpu_kill_self(void)
{
unsigned int cpu;
/* If powersave_nap is enabled, use NAP mode, else just
* spin aimlessly
*/
if (!powersave_nap) {
generic_mach_cpu_die();
return;
}
/* Standard hot unplug procedure */
local_irq_disable();
idle_task_exit();
@ -128,7 +120,7 @@ static void pnv_smp_cpu_kill_self(void)
*/
mtspr(SPRN_LPCR, mfspr(SPRN_LPCR) & ~(u64)LPCR_PECE1);
while (!generic_check_cpu_restart(cpu)) {
power7_idle();
power7_nap();
if (!generic_check_cpu_restart(cpu)) {
DBG("CPU%d Unexpected exit while offline !\n", cpu);
/* We may be getting an IPI, so we re-enable

6
arch/powerpc/sysdev/xics/icp-hv.c
View File

@ -65,7 +65,11 @@ static inline void icp_hv_set_xirr(unsigned int value)
static inline void icp_hv_set_qirr(int n_cpu , u8 value)
{
int hw_cpu = get_hard_smp_processor_id(n_cpu);
long rc = plpar_hcall_norets(H_IPI, hw_cpu, value);
long rc;
/* Make sure all previous accesses are ordered before IPI sending */
mb();
rc = plpar_hcall_norets(H_IPI, hw_cpu, value);
if (rc != H_SUCCESS) {
pr_err("%s: bad return code qirr cpu=%d hw_cpu=%d mfrr=0x%x "
"returned %ld\n", __func__, n_cpu, hw_cpu, value, rc);

3
arch/s390/include/asm/elf.h
View File

@ -180,7 +180,8 @@ extern char elf_platform[];
#define ELF_PLATFORM (elf_platform)
#ifndef CONFIG_64BIT
#define SET_PERSONALITY(ex) set_personality(PER_LINUX)
#define SET_PERSONALITY(ex) \
set_personality(PER_LINUX | (current->personality & (~PER_MASK)))
#else /* CONFIG_64BIT */
#define SET_PERSONALITY(ex) \
do { \

24
arch/s390/include/asm/hugetlb.h
View File

@ -66,16 +66,6 @@ static inline pte_t huge_ptep_get(pte_t *ptep)
return pte;
}
static inline pte_t huge_ptep_get_and_clear(struct mm_struct *mm,
unsigned long addr, pte_t *ptep)
{
pte_t pte = huge_ptep_get(ptep);
mm->context.flush_mm = 1;
pmd_clear((pmd_t *) ptep);
return pte;
}
static inline void __pmd_csp(pmd_t *pmdp)
{
register unsigned long reg2 asm("2") = pmd_val(*pmdp);
@ -117,6 +107,15 @@ static inline void huge_ptep_invalidate(struct mm_struct *mm,
__pmd_csp(pmdp);
}
static inline pte_t huge_ptep_get_and_clear(struct mm_struct *mm,
unsigned long addr, pte_t *ptep)
{
pte_t pte = huge_ptep_get(ptep);
huge_ptep_invalidate(mm, addr, ptep);
return pte;
}
#define huge_ptep_set_access_flags(__vma, __addr, __ptep, __entry, __dirty) \
({ \
int __changed = !pte_same(huge_ptep_get(__ptep), __entry); \
@ -131,10 +130,7 @@ static inline void huge_ptep_invalidate(struct mm_struct *mm,
({ \
pte_t __pte = huge_ptep_get(__ptep); \
if (pte_write(__pte)) { \
(__mm)->context.flush_mm = 1; \
if (atomic_read(&(__mm)->context.attach_count) > 1 || \
(__mm) != current->active_mm) \
huge_ptep_invalidate(__mm, __addr, __ptep); \
huge_ptep_invalidate(__mm, __addr, __ptep); \
set_huge_pte_at(__mm, __addr, __ptep, \
huge_pte_wrprotect(__pte)); \
} \

3
arch/s390/include/asm/posix_types.h
View File

@ -13,6 +13,7 @@
*/
typedef unsigned long __kernel_size_t;
typedef long __kernel_ssize_t;
#define __kernel_size_t __kernel_size_t
typedef unsigned short __kernel_old_dev_t;
@ -25,7 +26,6 @@ typedef unsigned short __kernel_mode_t;
typedef unsigned short __kernel_ipc_pid_t;
typedef unsigned short __kernel_uid_t;
typedef unsigned short __kernel_gid_t;
typedef int __kernel_ssize_t;
typedef int __kernel_ptrdiff_t;
#else /* __s390x__ */
@ -35,7 +35,6 @@ typedef unsigned int __kernel_mode_t;
typedef int __kernel_ipc_pid_t;
typedef unsigned int __kernel_uid_t;
typedef unsigned int __kernel_gid_t;
typedef long __kernel_ssize_t;
typedef long __kernel_ptrdiff_t;
typedef unsigned long __kernel_sigset_t; /* at least 32 bits */

1
arch/s390/include/asm/smp.h
View File

@ -44,6 +44,7 @@ static inline void smp_call_online_cpu(void (*func)(void *), void *data)
}
static inline int smp_find_processor_id(int address) { return 0; }
static inline int smp_store_status(int cpu) { return 0; }
static inline int smp_vcpu_scheduled(int cpu) { return 1; }
static inline void smp_yield_cpu(int cpu) { }
static inline void smp_yield(void) { }

2
arch/s390/include/asm/tlbflush.h
View File

@ -90,12 +90,10 @@ static inline void __tlb_flush_mm(struct mm_struct * mm)
static inline void __tlb_flush_mm_cond(struct mm_struct * mm)
{
spin_lock(&mm->page_table_lock);
if (mm->context.flush_mm) {
__tlb_flush_mm(mm);
mm->context.flush_mm = 0;
}
spin_unlock(&mm->page_table_lock);
}
/*

2
arch/s390/kernel/setup.c
View File

@ -974,11 +974,13 @@ static void __init setup_hwcaps(void)
if (MACHINE_HAS_HPAGE)
elf_hwcap |= HWCAP_S390_HPAGE;
#if defined(CONFIG_64BIT)
/*
* 64-bit register support for 31-bit processes
* HWCAP_S390_HIGH_GPRS is bit 9.
*/
elf_hwcap |= HWCAP_S390_HIGH_GPRS;
#endif
get_cpu_id(&cpu_id);
switch (cpu_id.machine) {

142
arch/s390/lib/uaccess_pt.c
View File

@ -2,69 +2,82 @@
* User access functions based on page table walks for enhanced
* system layout without hardware support.
*
* Copyright IBM Corp. 2006
* Copyright IBM Corp. 2006, 2012
* Author(s): Gerald Schaefer (gerald.schaefer@de.ibm.com)
*/
#include <linux/errno.h>
#include <linux/hardirq.h>
#include <linux/mm.h>
#include <linux/hugetlb.h>
#include <asm/uaccess.h>
#include <asm/futex.h>
#include "uaccess.h"
static inline pte_t *follow_table(struct mm_struct *mm, unsigned long addr)
/*
* Returns kernel address for user virtual address. If the returned address is
* >= -4095 (IS_ERR_VALUE(x) returns true), a fault has occured and the address
* contains the (negative) exception code.
*/
static __always_inline unsigned long follow_table(struct mm_struct *mm,
unsigned long addr, int write)
{
pgd_t *pgd;
pud_t *pud;
pmd_t *pmd;
pte_t *ptep;
pgd = pgd_offset(mm, addr);
if (pgd_none(*pgd) || unlikely(pgd_bad(*pgd)))
return (pte_t *) 0x3a;
return -0x3aUL;
pud = pud_offset(pgd, addr);
if (pud_none(*pud) || unlikely(pud_bad(*pud)))
return (pte_t *) 0x3b;
return -0x3bUL;
pmd = pmd_offset(pud, addr);
if (pmd_none(*pmd) || unlikely(pmd_bad(*pmd)))
return (pte_t *) 0x10;
if (pmd_none(*pmd))
return -0x10UL;
if (pmd_huge(*pmd)) {
if (write && (pmd_val(*pmd) & _SEGMENT_ENTRY_RO))
return -0x04UL;
return (pmd_val(*pmd) & HPAGE_MASK) + (addr & ~HPAGE_MASK);
}
if (unlikely(pmd_bad(*pmd)))
return -0x10UL;
return pte_offset_map(pmd, addr);
ptep = pte_offset_map(pmd, addr);
if (!pte_present(*ptep))
return -0x11UL;
if (write && !pte_write(*ptep))
return -0x04UL;
return (pte_val(*ptep) & PAGE_MASK) + (addr & ~PAGE_MASK);
}
static __always_inline size_t __user_copy_pt(unsigned long uaddr, void *kptr,
size_t n, int write_user)
{
struct mm_struct *mm = current->mm;
unsigned long offset, pfn, done, size;
pte_t *pte;
unsigned long offset, done, size, kaddr;
void *from, *to;
done = 0;
retry:
spin_lock(&mm->page_table_lock);
do {
pte = follow_table(mm, uaddr);
if ((unsigned long) pte < 0x1000)
kaddr = follow_table(mm, uaddr, write_user);
if (IS_ERR_VALUE(kaddr))
goto fault;
if (!pte_present(*pte)) {
pte = (pte_t *) 0x11;
goto fault;
} else if (write_user && !pte_write(*pte)) {
pte = (pte_t *) 0x04;
goto fault;
}
pfn = pte_pfn(*pte);
offset = uaddr & (PAGE_SIZE - 1);
offset = uaddr & ~PAGE_MASK;
size = min(n - done, PAGE_SIZE - offset);
if (write_user) {
to = (void *)((pfn << PAGE_SHIFT) + offset);
to = (void *) kaddr;
from = kptr + done;
} else {
from = (void *)((pfn << PAGE_SHIFT) + offset);
from = (void *) kaddr;
to = kptr + done;
}
memcpy(to, from, size);
@ -75,7 +88,7 @@ static __always_inline size_t __user_copy_pt(unsigned long uaddr, void *kptr,
return n - done;
fault:
spin_unlock(&mm->page_table_lock);
if (__handle_fault(uaddr, (unsigned long) pte, write_user))
if (__handle_fault(uaddr, -kaddr, write_user))
return n - done;
goto retry;
}
@ -84,27 +97,22 @@ static __always_inline size_t __user_copy_pt(unsigned long uaddr, void *kptr,
* Do DAT for user address by page table walk, return kernel address.
* This function needs to be called with current->mm->page_table_lock held.
*/
static __always_inline unsigned long __dat_user_addr(unsigned long uaddr)
static __always_inline unsigned long __dat_user_addr(unsigned long uaddr,
int write)
{
struct mm_struct *mm = current->mm;
unsigned long pfn;
pte_t *pte;
unsigned long kaddr;
int rc;
retry:
pte = follow_table(mm, uaddr);
if ((unsigned long) pte < 0x1000)
kaddr = follow_table(mm, uaddr, write);
if (IS_ERR_VALUE(kaddr))
goto fault;
if (!pte_present(*pte)) {
pte = (pte_t *) 0x11;
goto fault;
}
pfn = pte_pfn(*pte);
return (pfn << PAGE_SHIFT) + (uaddr & (PAGE_SIZE - 1));
return kaddr;
fault:
spin_unlock(&mm->page_table_lock);
rc = __handle_fault(uaddr, (unsigned long) pte, 0);
rc = __handle_fault(uaddr, -kaddr, write);
spin_lock(&mm->page_table_lock);
if (!rc)
goto retry;
@ -159,11 +167,9 @@ static size_t clear_user_pt(size_t n, void __user *to)
static size_t strnlen_user_pt(size_t count, const char __user *src)
{
char *addr;
unsigned long uaddr = (unsigned long) src;
struct mm_struct *mm = current->mm;
unsigned long offset, pfn, done, len;
pte_t *pte;
unsigned long offset, done, len, kaddr;
size_t len_str;
if (segment_eq(get_fs(), KERNEL_DS))
@ -172,19 +178,13 @@ static size_t strnlen_user_pt(size_t count, const char __user *src)
retry:
spin_lock(&mm->page_table_lock);
do {
pte = follow_table(mm, uaddr);
if ((unsigned long) pte < 0x1000)
kaddr = follow_table(mm, uaddr, 0);
if (IS_ERR_VALUE(kaddr))
goto fault;
if (!pte_present(*pte)) {
pte = (pte_t *) 0x11;
goto fault;
}
pfn = pte_pfn(*pte);
offset = uaddr & (PAGE_SIZE-1);
addr = (char *)(pfn << PAGE_SHIFT) + offset;
offset = uaddr & ~PAGE_MASK;
len = min(count - done, PAGE_SIZE - offset);
len_str = strnlen(addr, len);
len_str = strnlen((char *) kaddr, len);
done += len_str;
uaddr += len_str;
} while ((len_str == len) && (done < count));
@ -192,7 +192,7 @@ static size_t strnlen_user_pt(size_t count, const char __user *src)
return done + 1;
fault:
spin_unlock(&mm->page_table_lock);
if (__handle_fault(uaddr, (unsigned long) pte, 0))
if (__handle_fault(uaddr, -kaddr, 0))
return 0;
goto retry;
}
@ -225,11 +225,10 @@ static size_t copy_in_user_pt(size_t n, void __user *to,
const void __user *from)
{
struct mm_struct *mm = current->mm;
unsigned long offset_from, offset_to, offset_max, pfn_from, pfn_to,
uaddr, done, size, error_code;
unsigned long offset_max, uaddr, done, size, error_code;
unsigned long uaddr_from = (unsigned long) from;
unsigned long uaddr_to = (unsigned long) to;
pte_t *pte_from, *pte_to;
unsigned long kaddr_to, kaddr_from;
int write_user;
if (segment_eq(get_fs(), KERNEL_DS)) {
@ -242,38 +241,23 @@ static size_t copy_in_user_pt(size_t n, void __user *to,
do {
write_user = 0;
uaddr = uaddr_from;
pte_from = follow_table(mm, uaddr_from);
error_code = (unsigned long) pte_from;
if (error_code < 0x1000)
kaddr_from = follow_table(mm, uaddr_from, 0);
error_code = kaddr_from;
if (IS_ERR_VALUE(error_code))
goto fault;
if (!pte_present(*pte_from)) {
error_code = 0x11;
goto fault;
}
write_user = 1;
uaddr = uaddr_to;
pte_to = follow_table(mm, uaddr_to);
error_code = (unsigned long) pte_to;
if (error_code < 0x1000)
kaddr_to = follow_table(mm, uaddr_to, 1);
error_code = (unsigned long) kaddr_to;
if (IS_ERR_VALUE(error_code))
goto fault;
if (!pte_present(*pte_to)) {
error_code = 0x11;
goto fault;
} else if (!pte_write(*pte_to)) {
error_code = 0x04;
goto fault;
}
pfn_from = pte_pfn(*pte_from);
pfn_to = pte_pfn(*pte_to);
offset_from = uaddr_from & (PAGE_SIZE-1);
offset_to = uaddr_from & (PAGE_SIZE-1);
offset_max = max(offset_from, offset_to);
offset_max = max(uaddr_from & ~PAGE_MASK,
uaddr_to & ~PAGE_MASK);
size = min(n - done, PAGE_SIZE - offset_max);
memcpy((void *)(pfn_to << PAGE_SHIFT) + offset_to,
(void *)(pfn_from << PAGE_SHIFT) + offset_from, size);
memcpy((void *) kaddr_to, (void *) kaddr_from, size);
done += size;
uaddr_from += size;
uaddr_to += size;
@ -282,7 +266,7 @@ static size_t copy_in_user_pt(size_t n, void __user *to,
return n - done;
fault:
spin_unlock(&mm->page_table_lock);
if (__handle_fault(uaddr, error_code, write_user))
if (__handle_fault(uaddr, -error_code, write_user))
return n - done;
goto retry;
}
@ -341,7 +325,7 @@ int futex_atomic_op_pt(int op, u32 __user *uaddr, int oparg, int *old)
return __futex_atomic_op_pt(op, uaddr, oparg, old);
spin_lock(&current->mm->page_table_lock);
uaddr = (u32 __force __user *)
__dat_user_addr((__force unsigned long) uaddr);
__dat_user_addr((__force unsigned long) uaddr, 1);
if (!uaddr) {
spin_unlock(&current->mm->page_table_lock);
return -EFAULT;
@ -378,7 +362,7 @@ int futex_atomic_cmpxchg_pt(u32 *uval, u32 __user *uaddr,
return __futex_atomic_cmpxchg_pt(uval, uaddr, oldval, newval);
spin_lock(&current->mm->page_table_lock);
uaddr = (u32 __force __user *)
__dat_user_addr((__force unsigned long) uaddr);
__dat_user_addr((__force unsigned long) uaddr, 1);
if (!uaddr) {
spin_unlock(&current->mm->page_table_lock);
return -EFAULT;

10
arch/s390/oprofile/init.c
View File

@ -169,7 +169,7 @@ static ssize_t hw_interval_write(struct file *file, char const __user *buf,
if (*offset)
return -EINVAL;
retval = oprofilefs_ulong_from_user(&val, buf, count);
if (retval)
if (retval <= 0)
return retval;
if (val < oprofile_min_interval)
oprofile_hw_interval = oprofile_min_interval;
@ -212,7 +212,7 @@ static ssize_t hwsampler_zero_write(struct file *file, char const __user *buf,
return -EINVAL;
retval = oprofilefs_ulong_from_user(&val, buf, count);
if (retval)
if (retval <= 0)
return retval;
if (val != 0)
return -EINVAL;
@ -243,7 +243,7 @@ static ssize_t hwsampler_kernel_write(struct file *file, char const __user *buf,
return -EINVAL;
retval = oprofilefs_ulong_from_user(&val, buf, count);
if (retval)
if (retval <= 0)
return retval;
if (val != 0 && val != 1)
@ -278,7 +278,7 @@ static ssize_t hwsampler_user_write(struct file *file, char const __user *buf,
return -EINVAL;
retval = oprofilefs_ulong_from_user(&val, buf, count);
if (retval)
if (retval <= 0)
return retval;
if (val != 0 && val != 1)
@ -317,7 +317,7 @@ static ssize_t timer_enabled_write(struct file *file, char const __user *buf,
return -EINVAL;
retval = oprofilefs_ulong_from_user(&val, buf, count);
if (retval)
if (retval <= 0)
return retval;
if (val != 0 && val != 1)

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