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>
2006-09-13 22:08:26 +10:00
..
iseries
[POWERPC] Clean up it_lp_queue.h
2006-06-28 15:18:55 +10:00
8253pit.h
a.out.h
abs_addr.h
Don't include linux/config.h from anywhere else in include/
2006-04-26 12:56:16 +01:00
agp.h
asm-compat.h
atomic.h
power: improve inline asm memory constraints
2006-07-08 15:00:28 -07:00
auxvec.h
backlight.h
[PATCH] powermac: More powermac backlight fixes
2006-07-31 13:28:45 -07:00
bitops.h
power: improve inline asm memory constraints
2006-07-08 15:00:28 -07:00
bootx.h
btext.h
bug.h
[PATCH] git-powerpc: WARN was a dumb idea
2006-03-28 20:48:54 +11:00
bugs.h
byteorder.h
cache.h
Don't include linux/config.h from anywhere else in include/
2006-04-26 12:56:16 +01:00
cacheflush.h
checksum.h
compat.h
[PATCH] powerpc signal __user annotations
2006-02-08 01:03:46 -05:00
cputable.h
[POWERPC] Simplify the code defining the 64-bit CPU features
2006-06-28 15:19:03 +10:00
cputime.h
[PATCH] powerpc: implement missing jiffies64_to_cputime64()
2006-07-05 09:39:54 -07:00
current.h
dbdma.h
delay.h
[POWERPC] Fix mdelay badness on shared processor partitions
2006-06-21 15:01:33 +10:00
div64.h
dma-mapping.h
Don't include linux/config.h from anywhere else in include/
2006-04-26 12:56:16 +01:00
dma.h
Don't include linux/config.h from anywhere else in include/
2006-04-26 12:56:16 +01:00
eeh.h
[POWERPC] Fix MMIO ops to provide expected barrier behaviour
2006-09-13 22:08:26 +10:00
eeh_event.h
[PATCH] powerpc/pseries: clear PCI failure counter if no new failures
2006-04-22 18:46:13 +10:00
elf.h
Merge git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc
2006-06-22 22:11:30 -07:00
emergency-restart.h
errno.h
fcntl.h
firmware.h
[PATCH] powerpc: Rename and export ppc64_firmware_features
2006-03-28 16:45:20 +11:00
floppy.h
[PATCH] irq-flags: POWERPC: Use the new IRQF_ constants
2006-07-02 13:58:47 -07:00
futex.h
[POWERPC] Implement PowerPC futex_atomic_cmpxchg_inatomic().
2006-09-13 18:28:41 +10:00
grackle.h
hardirq.h
heathrow.h
hvcall.h
[POWERPC] check firmware state before suspending
2006-06-15 19:31:27 +10:00
hvconsole.h
[PATCH] powerpc: hvc_console updates
2006-03-28 16:45:26 +11:00
hvcserver.h
hw_irq.h
[PATCH] genirq: add ->retrigger() irq op to consolidate hw_irq_resend()
2006-06-29 10:26:23 -07:00
i8259.h
[POWERPC] Add new interrupt mapping core and change platforms to use it
2006-07-03 21:36:01 +10:00
ibmebus.h
ide.h
Don't include linux/config.h from anywhere else in include/
2006-04-26 12:56:16 +01:00
immap_86xx.h
[POWERPC] Add 8641 Register space and IRQ definitions.
2006-06-21 15:01:28 +10:00
io.h
[POWERPC] Fix MMIO ops to provide expected barrier behaviour
2006-09-13 22:08:26 +10:00
ioctl.h
ioctls.h
iommu.h
Merge git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc
2006-06-22 22:11:30 -07:00
ipc.h
ipcbuf.h
ipic.h
[POWERPC] back up old school ipic.[hc] to arch/ppc
2006-08-30 10:34:33 +10:00
irq.h
[PATCH] powerpc: fix trigger handling in the new irq code
2006-07-10 13:24:20 -07:00
irqflags.h
[PATCH] lockdep: irqtrace subsystem, core
2006-07-03 15:27:03 -07:00
Kbuild
Add Kbuild file for PowerPC 'make headers_install'
2006-06-18 12:17:47 +01:00
kdebug.h
[PATCH] Notify page fault call chain for powerpc
2006-06-26 09:58:22 -07:00
kdump.h
[POWERPC] kdump: Support kernels having 64k page size.
2006-09-13 18:30:04 +10:00
kexec.h
[POWERPC] Make crash.c work on 32-bit and 64-bit
2006-08-17 16:41:10 +10:00
keylargo.h
kmap_types.h
kprobes.h
[PATCH] IA64: kprobe invalidate icache of jump buffer
2006-07-31 13:28:38 -07:00
linkage.h
lmb.h
[PATCH] powerpc: Remove calculation of io hole
2006-03-22 15:04:30 +11:00
local.h
lppaca.h
[PATCH] Fix sparse parse error in lppaca.h
2006-01-17 17:18:25 -08:00
machdep.h
[POWERPC] Add new interrupt mapping core and change platforms to use it
2006-07-03 21:36:01 +10:00
macio.h
mc146818rtc.h
mediabay.h
mman.h
[PATCH] add asm-generic/mman.h
2006-02-15 15:32:22 -08:00
mmu.h
[POWERPC] powerpc: Initialise ppc_md htab pointers earlier
2006-06-28 11:59:47 +10:00
mmu_context.h
[POWERPC] Correct the MAX_CONTEXT definition
2006-06-29 16:16:15 +10:00
mmzone.h
Don't include linux/config.h from anywhere else in include/
2006-04-26 12:56:16 +01:00
module.h
mpc86xx.h
[POWERPC] Use mpc8641hpcn PIC base address from dev tree.
2006-08-25 14:32:13 +10:00
mpic.h
[POWERPC] Support for "weird" MPICs and fixup mpc7448_hpc2
2006-08-30 14:29:42 +10:00
msgbuf.h
mutex.h
[PATCH] mutex subsystem, add default include/asm-*/mutex.h files
2006-01-09 15:59:19 -08:00
namei.h
nvram.h
of_device.h
typo fixes: mecanism -> mechanism
2006-06-30 18:20:44 +02:00
ohare.h
oprofile_impl.h
[PATCH] powerpc: Remove oprofile spinlock backtrace code
2006-03-29 13:44:16 +11:00
paca.h
[POWERPC] Fix MMIO ops to provide expected barrier behaviour
2006-09-13 22:08:26 +10:00
page.h
Merge git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc
2006-06-22 22:11:30 -07:00
page_32.h
page_64.h
[PATCH] powerpc: Fix pagetable bloat for hugepages
2006-04-28 15:02:51 +10:00
param.h
parport.h
[PATCH] powerpc: parallel port init fix
2006-01-11 14:49:24 +11:00
pci-bridge.h
[POWERPC] pcibus_to_node fixes
2006-06-15 19:31:26 +10:00
pci.h
[PATCH] 64bit resource: change pci core and arch code to use resource_size_t
2006-06-27 09:24:00 -07:00
percpu.h
[PATCH] lockdep: add per_cpu_offset()
2006-07-03 15:27:00 -07:00
pgalloc.h
[POWERPC] hugepage BUG fix
2006-08-24 10:07:23 +10:00
pgtable-4k.h
powerpc: Use 64k pages without needing cache-inhibited large pages
2006-06-15 10:45:18 +10:00
pgtable-64k.h
powerpc: Use 64k pages without needing cache-inhibited large pages
2006-06-15 10:45:18 +10:00
pgtable.h
Merge git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc
2006-06-22 22:11:30 -07:00
pmac_feature.h
[PATCH] powerpc: Kill _machine and hard-coded platform numbers
2006-03-28 23:15:54 +11:00
pmac_low_i2c.h
[PATCH] 3/5 powerpc: Add platform functions interpreter
2006-01-09 15:47:18 +11:00
pmac_pfunc.h
typo fixes: mecanism -> mechanism
2006-06-30 18:20:44 +02:00
pmc.h
poll.h
[PATCH] POLLRDHUP/EPOLLRDHUP handling for half-closed devices notifications
2006-03-25 08:22:56 -08:00
posix_types.h
ppc-pci.h
[PATCH] powerpc: properly configure DDR/P5IOC children devs
2006-03-16 16:55:07 +11:00
ppc_asm.h
Don't include linux/config.h from anywhere else in include/
2006-04-26 12:56:16 +01:00
processor.h
[POWERPC] disable floating point exceptions for init
2006-06-21 15:01:33 +10:00
prom.h
[POWERPC] Make OF irq map code detect more error cases
2006-08-30 14:31:03 +10:00
pSeries_reconfig.h
ptrace.h
[PATCH] powerpc: enable PPC_PTRACE_[GS]ETREGS on ppc32
2006-06-09 21:20:51 +10:00
reg.h
[POWERPC] cell: add RAS support
2006-06-21 15:01:29 +10:00
reg_8xx.h
resource.h
rtas.h
[POWERPC] Fix might-sleep warning on removing cpus
2006-08-08 16:00:11 +10:00
rtc.h
rwsem.h
[PATCH] lockdep: remove RWSEM_DEBUG remnants
2006-07-03 15:27:01 -07:00
scatterlist.h
seccomp.h
sections.h
semaphore.h
sembuf.h
serial.h
powerpc: Introduce a new config symbol to control 16550 early debug code
2006-01-10 16:19:05 +11:00
setup.h
shmbuf.h
shmparam.h
sigcontext.h
siginfo.h
signal.h
[PATCH] irq-flags: POWERPC: Use the new IRQF_ constants
2006-07-02 13:58:47 -07:00
smp.h
Don't include linux/config.h from anywhere else in include/
2006-04-26 12:56:16 +01:00
smu.h
Don't include linux/config.h from anywhere else in include/
2006-04-26 12:56:16 +01:00
socket.h
[AF_UNIX]: Datagram getpeersec
2006-06-29 16:58:06 -07:00
sockios.h
sparsemem.h
spinlock.h
[POWERPC] Fix MMIO ops to provide expected barrier behaviour
2006-09-13 22:08:26 +10:00
spinlock_types.h
spu.h
[POWERPC] Add new interrupt mapping core and change platforms to use it
2006-07-03 21:36:01 +10:00
spu_csa.h
[POWERPC] spufs: one more fix for 64k pages
2006-06-21 15:01:32 +10:00
spu_priv1.h
[POWERPC] spufs: fix spu irq affinity setting
2006-06-21 15:01:31 +10:00
sstep.h
stat.h
statfs.h
string.h
powerpc: fix strncasecmp prototype
2006-03-25 09:41:40 -08:00
synch.h
[PATCH] powerpc: newline for ISYNC_ON_SMP
2006-02-24 14:06:00 +11:00
syscalls.h
[PATCH] powerpc: declare arch syscalls in <asm/syscalls.h>
2006-03-27 14:48:22 +11:00
systbl.h
[POWERPC] Unify ppc syscall tables
2006-06-21 15:01:32 +10:00
system.h
[POWERPC] Fix gettimeofday inaccuracies
2006-08-23 15:51:18 +10:00
tce.h
[PATCH] powerpc: kill union tce_entry
2006-04-29 18:07:54 +10:00
termbits.h
[PATCH] Add CMSPAR to termbits.h for powerpc and alpha
2006-05-26 11:55:46 -07:00
termios.h
thread_info.h
Don't include linux/config.h from anywhere else in include/
2006-04-26 12:56:16 +01:00
time.h
[POWERPC] Fix problem with time not advancing on 32-bit platforms
2006-08-30 16:09:43 +10:00
timex.h
Don't include linux/config.h from anywhere else in include/
2006-04-26 12:56:16 +01:00
tlb.h
Don't include linux/config.h from anywhere else in include/
2006-04-26 12:56:16 +01:00
tlbflush.h
Don't include linux/config.h from anywhere else in include/
2006-04-26 12:56:16 +01:00
todc.h
[POWERPC] todc: add support for Time-Of-Day-Clock
2006-06-29 16:22:46 +10:00
topology.h
[PATCH] sched: mc/smt power savings sched policy
2006-06-27 17:32:45 -07:00
tsi108.h
[POWERPC] Update mpc7448hpc2 board irq support using device tree
2006-08-23 15:51:18 +10:00
tsi108_irq.h
[POWERPC] Update mpc7448hpc2 board irq support using device tree
2006-08-23 15:51:18 +10:00
types.h
Don't include linux/config.h from anywhere else in include/
2006-04-26 12:56:16 +01:00
uaccess.h
powerpc: Fix incorrect might_sleep in __get_user/__put_user on kernel addresses
2006-05-03 23:06:46 +10:00
ucontext.h
udbg.h
[POWERPC] Add udbg support for RTAS console
2006-06-28 11:59:48 +10:00
unaligned.h
uninorth.h
unistd.h
Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6
2006-05-24 09:22:21 +01:00
user.h
vdso.h
vdso_datapage.h
[PATCH] powerpc: Kill _machine and hard-coded platform numbers
2006-03-28 23:15:54 +11:00
vga.h
[PATCH] vgacon: make VGA_MAP_MEM take size, remove extra use
2006-06-22 15:05:58 -07:00
vio.h
Merge git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc
2006-06-22 22:11:30 -07:00
xmon.h
xor.h