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Paul Mackerras f007cacffc [POWERPC] Fix MMIO ops to provide expected barrier behaviour ... This changes the writeX family of functions to have a sync instruction before the MMIO store rather than after, because the generally expected behaviour is that the device receiving the MMIO store can be guaranteed to see the effects of any preceding writes to normal memory. To preserve ordering between writeX and readX, and to preserve ordering between preceding stores and the readX, the readX family of functions have had an sync added before the load. Although writeX followed by spin_unlock is not officially guaranteed to keep the writeX inside the spin-locked region unless an mmiowb() is used, there are currently drivers that depend on the previous behaviour on powerpc, which was that the mmiowb wasn't actually required. Therefore we have a per-cpu flag that is set by writeX, cleared by __raw_spin_lock and mmiowb, and tested by __raw_spin_unlock. If it is set, __raw_spin_unlock does a sync and clears it. This changes both 32-bit and 64-bit readX/writeX. 32-bit already has a sync in __raw_spin_unlock (since lwsync doesn't exist on 32-bit), and thus doesn't need the per-cpu flag. Tested on G5 (PPC970) and POWER5. Signed-off-by: Paul Mackerras <paulus@samba.org>		19 years ago
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iseries	[POWERPC] Clean up it_lp_queue.h	19 years ago
8253pit.h	…
Kbuild	Add Kbuild file for PowerPC 'make headers_install'	19 years ago
a.out.h	…
abs_addr.h	Don't include linux/config.h from anywhere else in include/	19 years ago
agp.h	…
asm-compat.h	…
atomic.h	power: improve inline asm memory constraints	19 years ago
auxvec.h	…
backlight.h	[PATCH] powermac: More powermac backlight fixes	19 years ago
bitops.h	power: improve inline asm memory constraints	19 years ago
bootx.h	…
btext.h	…
bug.h	[PATCH] git-powerpc: WARN was a dumb idea	19 years ago
bugs.h	…
byteorder.h	…
cache.h	Don't include linux/config.h from anywhere else in include/	19 years ago
cacheflush.h	…
checksum.h	…
compat.h	[PATCH] powerpc signal __user annotations	19 years ago
cputable.h	[POWERPC] Simplify the code defining the 64-bit CPU features	19 years ago
cputime.h	[PATCH] powerpc: implement missing jiffies64_to_cputime64()	19 years ago
current.h	…
dbdma.h	…
delay.h	[POWERPC] Fix mdelay badness on shared processor partitions	19 years ago
div64.h	…
dma-mapping.h	Don't include linux/config.h from anywhere else in include/	19 years ago
dma.h	Don't include linux/config.h from anywhere else in include/	19 years ago
eeh.h	[POWERPC] Fix MMIO ops to provide expected barrier behaviour	19 years ago
eeh_event.h	[PATCH] powerpc/pseries: clear PCI failure counter if no new failures	19 years ago
elf.h	Merge git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc	19 years ago
emergency-restart.h	…
errno.h	…
fcntl.h	…
firmware.h	[PATCH] powerpc: Rename and export ppc64_firmware_features	19 years ago
floppy.h	[PATCH] irq-flags: POWERPC: Use the new IRQF_ constants	19 years ago
futex.h	[POWERPC] Implement PowerPC futex_atomic_cmpxchg_inatomic().	19 years ago
grackle.h	…
hardirq.h	…
heathrow.h	…
hvcall.h	[POWERPC] check firmware state before suspending	19 years ago
hvconsole.h	[PATCH] powerpc: hvc_console updates	19 years ago
hvcserver.h	…
hw_irq.h	[PATCH] genirq: add ->retrigger() irq op to consolidate hw_irq_resend()	19 years ago
i8259.h	[POWERPC] Add new interrupt mapping core and change platforms to use it	19 years ago
ibmebus.h	…
ide.h	Don't include linux/config.h from anywhere else in include/	19 years ago
immap_86xx.h	[POWERPC] Add 8641 Register space and IRQ definitions.	19 years ago
io.h	[POWERPC] Fix MMIO ops to provide expected barrier behaviour	19 years ago
ioctl.h	…
ioctls.h	…
iommu.h	Merge git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc	19 years ago
ipc.h	…
ipcbuf.h	…
ipic.h	[POWERPC] back up old school ipic.[hc] to arch/ppc	19 years ago
irq.h	[PATCH] powerpc: fix trigger handling in the new irq code	19 years ago
irqflags.h	[PATCH] lockdep: irqtrace subsystem, core	19 years ago
kdebug.h	[PATCH] Notify page fault call chain for powerpc	19 years ago
kdump.h	[POWERPC] kdump: Support kernels having 64k page size.	19 years ago
kexec.h	[POWERPC] Make crash.c work on 32-bit and 64-bit	19 years ago
keylargo.h	…
kmap_types.h	…
kprobes.h	[PATCH] IA64: kprobe invalidate icache of jump buffer	19 years ago
linkage.h	…
lmb.h	[PATCH] powerpc: Remove calculation of io hole	19 years ago
local.h	…
lppaca.h	[PATCH] Fix sparse parse error in lppaca.h	19 years ago
machdep.h	[POWERPC] Add new interrupt mapping core and change platforms to use it	19 years ago
macio.h	…
mc146818rtc.h	…
mediabay.h	…
mman.h	[PATCH] add asm-generic/mman.h	19 years ago
mmu.h	[POWERPC] powerpc: Initialise ppc_md htab pointers earlier	19 years ago
mmu_context.h	[POWERPC] Correct the MAX_CONTEXT definition	19 years ago
mmzone.h	Don't include linux/config.h from anywhere else in include/	19 years ago
module.h	…
mpc86xx.h	[POWERPC] Use mpc8641hpcn PIC base address from dev tree.	19 years ago
mpic.h	[POWERPC] Support for "weird" MPICs and fixup mpc7448_hpc2	19 years ago
msgbuf.h	…
mutex.h	[PATCH] mutex subsystem, add default include/asm-*/mutex.h files	19 years ago
namei.h	…
nvram.h	…
of_device.h	typo fixes: mecanism -> mechanism	19 years ago
ohare.h	…
oprofile_impl.h	[PATCH] powerpc: Remove oprofile spinlock backtrace code	19 years ago
pSeries_reconfig.h	…
paca.h	[POWERPC] Fix MMIO ops to provide expected barrier behaviour	19 years ago
page.h	Merge git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc	19 years ago
page_32.h	…
page_64.h	[PATCH] powerpc: Fix pagetable bloat for hugepages	19 years ago
param.h	…
parport.h	[PATCH] powerpc: parallel port init fix	19 years ago
pci-bridge.h	[POWERPC] pcibus_to_node fixes	19 years ago
pci.h	[PATCH] 64bit resource: change pci core and arch code to use resource_size_t	19 years ago
percpu.h	[PATCH] lockdep: add per_cpu_offset()	19 years ago
pgalloc.h	[POWERPC] hugepage BUG fix	19 years ago
pgtable-4k.h	powerpc: Use 64k pages without needing cache-inhibited large pages	19 years ago
pgtable-64k.h	powerpc: Use 64k pages without needing cache-inhibited large pages	19 years ago
pgtable.h	Merge git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc	19 years ago
pmac_feature.h	[PATCH] powerpc: Kill _machine and hard-coded platform numbers	19 years ago
pmac_low_i2c.h	[PATCH] 3/5 powerpc: Add platform functions interpreter	19 years ago
pmac_pfunc.h	typo fixes: mecanism -> mechanism	19 years ago
pmc.h	…
poll.h	[PATCH] POLLRDHUP/EPOLLRDHUP handling for half-closed devices notifications	19 years ago
posix_types.h	…
ppc-pci.h	[PATCH] powerpc: properly configure DDR/P5IOC children devs	19 years ago
ppc_asm.h	Don't include linux/config.h from anywhere else in include/	19 years ago
processor.h	[POWERPC] disable floating point exceptions for init	19 years ago
prom.h	[POWERPC] Make OF irq map code detect more error cases	19 years ago
ptrace.h	[PATCH] powerpc: enable PPC_PTRACE_[GS]ETREGS on ppc32	19 years ago
reg.h	[POWERPC] cell: add RAS support	19 years ago
reg_8xx.h	…
resource.h	…
rtas.h	[POWERPC] Fix might-sleep warning on removing cpus	19 years ago
rtc.h	…
rwsem.h	[PATCH] lockdep: remove RWSEM_DEBUG remnants	19 years ago
scatterlist.h	…
seccomp.h	…
sections.h	…
semaphore.h	…
sembuf.h	…
serial.h	powerpc: Introduce a new config symbol to control 16550 early debug code	19 years ago
setup.h	…
shmbuf.h	…
shmparam.h	…
sigcontext.h	…
siginfo.h	…
signal.h	[PATCH] irq-flags: POWERPC: Use the new IRQF_ constants	19 years ago
smp.h	Don't include linux/config.h from anywhere else in include/	19 years ago
smu.h	Don't include linux/config.h from anywhere else in include/	19 years ago
socket.h	[AF_UNIX]: Datagram getpeersec	19 years ago
sockios.h	…
sparsemem.h	…
spinlock.h	[POWERPC] Fix MMIO ops to provide expected barrier behaviour	19 years ago
spinlock_types.h	…
spu.h	[POWERPC] Add new interrupt mapping core and change platforms to use it	19 years ago
spu_csa.h	[POWERPC] spufs: one more fix for 64k pages	19 years ago
spu_priv1.h	[POWERPC] spufs: fix spu irq affinity setting	19 years ago
sstep.h	…
stat.h	…
statfs.h	…
string.h	powerpc: fix strncasecmp prototype	19 years ago
synch.h	[PATCH] powerpc: newline for ISYNC_ON_SMP	19 years ago
syscalls.h	[PATCH] powerpc: declare arch syscalls in <asm/syscalls.h>	19 years ago
systbl.h	[POWERPC] Unify ppc syscall tables	19 years ago
system.h	[POWERPC] Fix gettimeofday inaccuracies	19 years ago
tce.h	[PATCH] powerpc: kill union tce_entry	19 years ago
termbits.h	[PATCH] Add CMSPAR to termbits.h for powerpc and alpha	19 years ago
termios.h	…
thread_info.h	Don't include linux/config.h from anywhere else in include/	19 years ago
time.h	[POWERPC] Fix problem with time not advancing on 32-bit platforms	19 years ago
timex.h	Don't include linux/config.h from anywhere else in include/	19 years ago
tlb.h	Don't include linux/config.h from anywhere else in include/	19 years ago
tlbflush.h	Don't include linux/config.h from anywhere else in include/	19 years ago
todc.h	[POWERPC] todc: add support for Time-Of-Day-Clock	19 years ago
topology.h	[PATCH] sched: mc/smt power savings sched policy	19 years ago
tsi108.h	[POWERPC] Update mpc7448hpc2 board irq support using device tree	19 years ago
tsi108_irq.h	[POWERPC] Update mpc7448hpc2 board irq support using device tree	19 years ago
types.h	Don't include linux/config.h from anywhere else in include/	19 years ago
uaccess.h	powerpc: Fix incorrect might_sleep in __get_user/__put_user on kernel addresses	19 years ago
ucontext.h	…
udbg.h	[POWERPC] Add udbg support for RTAS console	19 years ago
unaligned.h	…
uninorth.h	…
unistd.h	Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6	19 years ago
user.h	…
vdso.h	…
vdso_datapage.h	[PATCH] powerpc: Kill _machine and hard-coded platform numbers	19 years ago
vga.h	[PATCH] vgacon: make VGA_MAP_MEM take size, remove extra use	19 years ago
vio.h	Merge git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc	19 years ago
xmon.h	…
xor.h	…