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author | Linus Torvalds <torvalds@linux-foundation.org> | 2014-06-06 00:57:04 +0200 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2014-06-06 00:57:04 +0200 |
commit | eb3d3ec567e868c8a3bfbfdfc9465ffd52983d11 (patch) | |
tree | 75acf38b8d73cd281e5ce4dcc941faf48e244b98 /arch/arm/include/asm/cp15.h | |
parent | Merge branch 'arm64-efi-for-linus' of git://git.kernel.org/pub/scm/linux/kern... (diff) | |
parent | Merge branch 'devel-stable' into for-next (diff) | |
download | linux-eb3d3ec567e868c8a3bfbfdfc9465ffd52983d11.tar.xz linux-eb3d3ec567e868c8a3bfbfdfc9465ffd52983d11.zip |
Merge branch 'for-linus' of git://ftp.arm.linux.org.uk/~rmk/linux-arm into next
Pull ARM updates from Russell King:
- Major clean-up of the L2 cache support code. The existing mess was
becoming rather unmaintainable through all the additions that others
have done over time. This turns it into a much nicer structure, and
implements a few performance improvements as well.
- Clean up some of the CP15 control register tweaks for alignment
support, moving some code and data into alignment.c
- DMA properties for ARM, from Santosh and reviewed by DT people. This
adds DT properties to specify bus translations we can't discover
automatically, and to indicate whether devices are coherent.
- Hibernation support for ARM
- Make ftrace work with read-only text in modules
- add suspend support for PJ4B CPUs
- rework interrupt masking for undefined instruction handling, which
allows us to enable interrupts earlier in the handling of these
exceptions.
- support for big endian page tables
- fix stacktrace support to exclude stacktrace functions from the
trace, and add save_stack_trace_regs() implementation so that kprobes
can record stack traces.
- Add support for the Cortex-A17 CPU.
- Remove last vestiges of ARM710 support.
- Removal of ARM "meminfo" structure, finally converting us solely to
memblock to handle the early memory initialisation.
* 'for-linus' of git://ftp.arm.linux.org.uk/~rmk/linux-arm: (142 commits)
ARM: ensure C page table setup code follows assembly code (part II)
ARM: ensure C page table setup code follows assembly code
ARM: consolidate last remaining open-coded alignment trap enable
ARM: remove global cr_no_alignment
ARM: remove CPU_CP15 conditional from alignment.c
ARM: remove unused adjust_cr() function
ARM: move "noalign" command line option to alignment.c
ARM: provide common method to clear bits in CPU control register
ARM: 8025/1: Get rid of meminfo
ARM: 8060/1: mm: allow sub-architectures to override PCI I/O memory type
ARM: 8066/1: correction for ARM patch 8031/2
ARM: 8049/1: ftrace/add save_stack_trace_regs() implementation
ARM: 8065/1: remove last use of CONFIG_CPU_ARM710
ARM: 8062/1: Modify ldrt fixup handler to re-execute the userspace instruction
ARM: 8047/1: rwsem: use asm-generic rwsem implementation
ARM: l2c: trial at enabling some Cortex-A9 optimisations
ARM: l2c: add warnings for stuff modifying aux_ctrl register values
ARM: l2c: print a warning with L2C-310 caches if the cache size is modified
ARM: l2c: remove old .set_debug method
ARM: l2c: kill L2X0_AUX_CTRL_MASK before anyone else makes use of this
...
Diffstat (limited to 'arch/arm/include/asm/cp15.h')
-rw-r--r-- | arch/arm/include/asm/cp15.h | 25 |
1 files changed, 12 insertions, 13 deletions
diff --git a/arch/arm/include/asm/cp15.h b/arch/arm/include/asm/cp15.h index 6493802f880a..c3f11524f10c 100644 --- a/arch/arm/include/asm/cp15.h +++ b/arch/arm/include/asm/cp15.h @@ -42,24 +42,23 @@ #ifndef __ASSEMBLY__ #if __LINUX_ARM_ARCH__ >= 4 -#define vectors_high() (cr_alignment & CR_V) +#define vectors_high() (get_cr() & CR_V) #else #define vectors_high() (0) #endif #ifdef CONFIG_CPU_CP15 -extern unsigned long cr_no_alignment; /* defined in entry-armv.S */ extern unsigned long cr_alignment; /* defined in entry-armv.S */ -static inline unsigned int get_cr(void) +static inline unsigned long get_cr(void) { - unsigned int val; + unsigned long val; asm("mrc p15, 0, %0, c1, c0, 0 @ get CR" : "=r" (val) : : "cc"); return val; } -static inline void set_cr(unsigned int val) +static inline void set_cr(unsigned long val) { asm volatile("mcr p15, 0, %0, c1, c0, 0 @ set CR" : : "r" (val) : "cc"); @@ -80,10 +79,6 @@ static inline void set_auxcr(unsigned int val) isb(); } -#ifndef CONFIG_SMP -extern void adjust_cr(unsigned long mask, unsigned long set); -#endif - #define CPACC_FULL(n) (3 << (n * 2)) #define CPACC_SVC(n) (1 << (n * 2)) #define CPACC_DISABLE(n) (0 << (n * 2)) @@ -106,13 +101,17 @@ static inline void set_copro_access(unsigned int val) #else /* ifdef CONFIG_CPU_CP15 */ /* - * cr_alignment and cr_no_alignment are tightly coupled to cp15 (at least in the - * minds of the developers). Yielding 0 for machines without a cp15 (and making - * it read-only) is fine for most cases and saves quite some #ifdeffery. + * cr_alignment is tightly coupled to cp15 (at least in the minds of the + * developers). Yielding 0 for machines without a cp15 (and making it + * read-only) is fine for most cases and saves quite some #ifdeffery. */ -#define cr_no_alignment UL(0) #define cr_alignment UL(0) +static inline unsigned long get_cr(void) +{ + return 0; +} + #endif /* ifdef CONFIG_CPU_CP15 / else */ #endif /* ifndef __ASSEMBLY__ */ |