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5d2efba64b231a1733c4048d1708d77e07f26426
linux/include/asm-powerpc
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Linas Vepstas 5d2efba64b [POWERPC] Use 4kB iommu pages even on 64kB-page systems 
The 10Gigabit ethernet device drivers appear to be able to chew
up all 256MB of TCE mappings on pSeries systems, as evidenced by
numerous error messages:

 iommu_alloc failed, tbl c0000000010d5c48 vaddr c0000000d875eff0 npages 1

Some experimentation indicates that this is essentially because
one 1500 byte ethernet MTU gets mapped as a 64K DMA region when
the large 64K pages are enabled. Thus, it doesn't take much to
exhaust all of the available DMA mappings for a high-speed card.

This patch changes the iommu allocator to work with its own
unique, distinct page size. Although the patch is long, its
actually quite simple: it just #defines a distinct IOMMU_PAGE_SIZE
and then uses this in all the places that matter.

As a side effect, it also dramatically improves network performance
on platforms with H-calls on iommu translation inserts/removes (since
we no longer call it 16 times for a 1500 bytes packet when the iommu HW
is still 4k).

In the future, we might want to make the IOMMU_PAGE_SIZE a variable
in the iommu_table instance, thus allowing support for different HW
page sizes in the iommu itself.

Signed-off-by: Linas Vepstas <linas@austin.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Acked-by: Olof Johansson <olof@lixom.net>
Acked-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-11-01 14:52:48 +11:00
..
iseries
[POWERPC] Fix up after irq changes
2006-10-07 22:08:26 +10:00
8253pit.h
[PATCH] powerpc: Standardize on _ASM_POWERPC header symbol prefix
2005-09-09 22:11:34 +10:00
a.out.h
[PATCH] powerpc: Merge include/asm-ppc*/a.out.h into include/asm-powerpc
2005-09-21 19:21:08 +10:00
abs_addr.h
Don't include linux/config.h from anywhere else in include/
2006-04-26 12:56:16 +01:00
agp.h
[PATCH] powerpc: sanitize header files for user space includes
2006-01-09 15:13:08 +11:00
asm-compat.h
[POWERPC] Support feature fixups in vdso's
2006-10-25 11:54:07 +10:00
atomic.h
power: improve inline asm memory constraints
2006-07-08 15:00:28 -07:00
auxvec.h
[PATCH] powerpc: Merge vdso's and add vdso support to 32 bits kernel
2005-11-11 22:25:39 +11:00
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
[PATCH] powerpc: sanitize header files for user space includes
2006-01-09 15:13:08 +11:00
btext.h
[PATCH] powerpc: Unify udbg (#2)
2006-01-09 14:49:54 +11:00
bug.h
[PATCH] Let WARN_ON/WARN_ON_ONCE return the condition
2006-09-29 09:18:06 -07:00
bugs.h
[PATCH] powerpc: Make check_bugs() static inline
2005-09-09 22:11:35 +10:00
byteorder.h
[PATCH] powerpc: merge byteorder.h
2005-09-28 15:42:53 +10:00
cache.h
Don't include linux/config.h from anywhere else in include/
2006-04-26 12:56:16 +01:00
cacheflush.h
[PATCH] powerpc: Merge cacheflush.h and cache.h
2005-11-10 13:09:22 +11:00
checksum.h
[PATCH] powerpc: sanitize header files for user space includes
2006-01-09 15:13:08 +11:00
compat.h
[PATCH] powerpc signal __user annotations
2006-02-08 01:03:46 -05:00
cputable.h
[POWERPC] Cell timebase bug workaround
2006-10-25 11:54:18 +10:00
cputime.h
[PATCH] powerpc: implement missing jiffies64_to_cputime64()
2006-07-05 09:39:54 -07:00
current.h
[PATCH] powerpc: sanitize header files for user space includes
2006-01-09 15:13:08 +11:00
dbdma.h
powerpc: Merge various powermac-related header files.
2005-10-20 20:53:39 +10:00
delay.h
[POWERPC] Fix mdelay badness on shared processor partitions
2006-06-21 15:01:33 +10:00
div64.h
[PATCH] Move the identical files from include/asm-ppc{,64}
2005-08-30 13:32:05 +10:00
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_event.h
[PATCH] powerpc/pseries: clear PCI failure counter if no new failures
2006-04-22 18:46:13 +10:00
eeh.h
[POWERPC] Fix MMIO ops to provide expected barrier behaviour
2006-09-13 22:08:26 +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
[PATCH] Move the identical files from include/asm-ppc{,64}
2005-08-30 13:32:05 +10:00
errno.h
[PATCH] powerpc: Standardize on _ASM_POWERPC header symbol prefix
2005-09-09 22:11:34 +10:00
fcntl.h
[PATCH] Consolidate the asm-ppc*/fcntl.h files into asm-powerpc
2005-09-07 16:57:39 -07:00
firmware.h
[POWERPC] Support feature fixups in vdso's
2006-10-25 11:54:07 +10:00
floppy.h
[PATCH] irq-flags: POWERPC: Use the new IRQF_ constants
2006-07-02 13:58:47 -07:00
fs_pd.h
POWERPC: Get rid of remapping the whole immr
2006-09-21 22:37:58 +04:00
futex.h
[POWERPC] Implement PowerPC futex_atomic_cmpxchg_inatomic().
2006-09-13 18:28:41 +10:00
grackle.h
[PATCH] powerpc: sanitize header files for user space includes
2006-01-09 15:13:08 +11:00
hardirq.h
[PATCH] powerpc: sanitize header files for user space includes
2006-01-09 15:13:08 +11:00
heathrow.h
powerpc: Fix some #ifndef __KERNEL__ that should be #ifdef
2006-01-09 15:14:05 +11:00
hvcall.h
[POWERPC] powerpc: Instrument Hypervisor Calls
2006-09-13 18:39:53 +10:00
hvconsole.h
[PATCH] powerpc: hvc_console updates
2006-03-28 16:45:26 +11:00
hvcserver.h
[PATCH] powerpc: sanitize header files for user space includes
2006-01-09 15:13:08 +11:00
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] Fix CHRP platforms with only 8259
2006-10-25 13:49:22 +10:00
ibmebus.h
IRQ: Use the new typedef for interrupt handler function pointers
2006-10-09 12:19:47 +01:00
ide.h
[POWERPC] clean up ide io accessors
2006-09-20 14:06:18 +10:00
immap_86xx.h
[POWERPC] Add 8641 Register space and IRQ definitions.
2006-06-21 15:01:28 +10:00
immap_qe.h
[POWERPC] Add QUICC Engine (QE) infrastructure
2006-10-04 15:24:27 +10:00
io.h
[PATCH] Consolidate check_signature
2006-10-11 11:14:23 -07:00
ioctl.h
[PATCH] powerpc: Standardize on _ASM_POWERPC header symbol prefix
2005-09-09 22:11:34 +10:00
ioctls.h
powerpc: remove duplicate ioctl definitions
2005-11-01 14:36:30 +11:00
iommu.h
[POWERPC] Use 4kB iommu pages even on 64kB-page systems
2006-11-01 14:52:48 +11:00
ipc.h
[PATCH] Move the identical files from include/asm-ppc{,64}
2005-08-30 13:32:05 +10:00
ipcbuf.h
[PATCH] powerpc: Keep fixing merged ipcbuf.h
2005-11-03 16:58:17 +11:00
ipic.h
[POWERPC] Fix up after irq changes
2006-10-07 22:08:26 +10:00
irq_regs.h
IRQ: Maintain regs pointer globally rather than passing to IRQ handlers
2006-10-05 15:10:12 +01:00
irq.h
IRQ: Maintain regs pointer globally rather than passing to IRQ handlers
2006-10-05 15:10:12 +01:00
irqflags.h
[PATCH] lockdep: irqtrace subsystem, core
2006-07-03 15:27:03 -07:00
Kbuild
[HEADERS] One line per header in Kbuild files to reduce conflicts
2006-09-19 12:43:58 +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
[PATCH] powerpc: sanitize header files for user space includes
2006-01-09 15:13:08 +11:00
kmap_types.h
[PATCH] powerpc: Merge kmap_types.h
2005-09-19 09:38:49 +10:00
kprobes.h
[PATCH] kprobes: handle symbol resolution when <module:.symbol> is specified
2006-10-02 07:57:16 -07:00
linkage.h
[PATCH] powerpc: Standardize on _ASM_POWERPC header symbol prefix
2005-09-09 22:11:34 +10:00
lmb.h
[PATCH] powerpc: Remove calculation of io hole
2006-03-22 15:04:30 +11:00
local.h
[PATCH] Move all the very similar files to asm-powerpc
2005-08-30 13:32:06 +10:00
lppaca.h
[POWERPC] Update lppaca offset comments
2006-08-08 17:08:58 +10:00
machdep.h
[POWERPC] Fix up after irq changes
2006-10-07 22:08:26 +10:00
macio.h
[PATCH] powerpc: sanitize header files for user space includes
2006-01-09 15:13:08 +11:00
mc146818rtc.h
[PATCH] powerpc: Standardize on _ASM_POWERPC header symbol prefix
2005-09-09 22:11:34 +10:00
mediabay.h
powerpc: Merge various powermac-related header files.
2005-10-20 20:53:39 +10:00
mman.h
[PATCH] add asm-generic/mman.h
2006-02-15 15:32:22 -08:00
mmu_context.h
[POWERPC] Correct the MAX_CONTEXT definition
2006-06-29 16:16:15 +10:00
mmu.h
[POWERPC] powerpc: Initialise ppc_md htab pointers earlier
2006-06-28 11:59:47 +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
[PATCH] powerpc: sanitize header files for user space includes
2006-01-09 15:13:08 +11:00
mpc85xx.h
POWERPC: Add support for the mpc8560 eval board
2006-09-21 22:31:26 +04:00
mpc86xx.h
[POWERPC] Use mpc8641hpcn PIC base address from dev tree.
2006-08-25 14:32:13 +10:00
mpic.h
[POWERPC] Fix up after irq changes
2006-10-07 22:08:26 +10:00
msgbuf.h
[PATCH] powerpc: Merge a few more include files
2005-09-09 22:11:35 +10:00
mutex.h
[PATCH] mutex subsystem, add default include/asm-*/mutex.h files
2006-01-09 15:59:19 -08:00
namei.h
[PATCH] powerpc: Standardize on _ASM_POWERPC header symbol prefix
2005-09-09 22:11:34 +10:00
nvram.h
[PATCH] powerpc: sanitize header files for user space includes
2006-01-09 15:13:08 +11:00
of_device.h
typo fixes: mecanism -> mechanism
2006-06-30 18:20:44 +02:00
ohare.h
powerpc: Fix some #ifndef __KERNEL__ that should be #ifdef
2006-01-09 15:14:05 +11:00
oprofile_impl.h
[POWERPC] Fix oprofile support for e500 in arch/powerpc
2006-11-01 14:52:48 +11:00
paca.h
Merge branch 'linux-2.6'
2006-09-14 07:07:18 +10:00
page_32.h
[PATCH] powerpc: sanitize header files for user space includes
2006-01-09 15:13:08 +11:00
page_64.h
[PATCH] powerpc: Fix pagetable bloat for hugepages
2006-04-28 15:02:51 +10:00
page.h
[POWERPC] Remove DISCONTIGMEM cruft from page.h
2006-09-22 15:19:58 +10:00
param.h
[PATCH] powerpc: sanitize header files for user space includes
2006-01-09 15:13:08 +11:00
parport.h
[PATCH] powerpc: parallel port init fix
2006-01-11 14:49:24 +11:00
pci-bridge.h
Remove all inclusions of <linux/config.h>
2006-10-04 03:38:54 -04:00
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
[PATCH] Standardize pxx_page macros
2006-09-26 08:48:51 -07:00
pgtable-64k.h
powerpc: Use 64k pages without needing cache-inhibited large pages
2006-06-15 10:45:18 +10:00
pgtable.h
[PATCH] Standardize pxx_page macros
2006-09-26 08:48:51 -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
[POWERPC] Fix oprofile support for e500 in arch/powerpc
2006-11-01 14:52:48 +11:00
poll.h
[PATCH] POLLRDHUP/EPOLLRDHUP handling for half-closed devices notifications
2006-03-25 08:22:56 -08:00
posix_types.h
[PATCH] powerpc: Merge asm-ppc*/posix_types.h
2005-09-21 19:21:07 +10:00
ppc_asm.h
[POWERPC] Cell timebase bug workaround
2006-10-25 11:54:18 +10:00
ppc-pci.h
[POWERPC] EEH: enable MMIO/DMA on frozen slot
2006-09-21 22:59:14 +10:00
processor.h
[POWERPC] Add briq support to CHRP
2006-07-07 20:19:15 +10:00
prom.h
[POWERPC] Fix device_is_compatible() const warning
2006-10-25 11:54:24 +10:00
pSeries_reconfig.h
[PATCH] powerpc: sanitize header files for user space includes
2006-01-09 15:13:08 +11:00
ptrace.h
[PATCH] Add regs_return_value() helper
2006-10-02 07:57:16 -07:00
qe_ic.h
[POWERPC] Add QUICC Engine (QE) infrastructure
2006-10-04 15:24:27 +10:00
qe.h
[POWERPC] Add QUICC Engine (QE) infrastructure
2006-10-04 15:24:27 +10:00
reg_8xx.h
[PATCH] powerpc: Merge cacheflush.h and cache.h
2005-11-10 13:09:22 +11:00
reg.h
[POWERPC] Cell timebase bug workaround
2006-10-25 11:54:18 +10:00
resource.h
[PATCH] Move all the very similar files to asm-powerpc
2005-08-30 13:32:06 +10:00
rtas.h
[POWERPC] Add a helper for calculating RTAS "config_addr" parameters
2006-08-25 13:27:35 +10:00
rtc.h
powerpc: Make set_rtc_time() return error code from lower-level function
2005-10-22 15:57:55 +10:00
rwsem.h
[PATCH] lockdep: remove RWSEM_DEBUG remnants
2006-07-03 15:27:01 -07:00
scatterlist.h
[PATCH] powerpc: merge scatterlist.h
2005-10-27 16:45:52 +10:00
seccomp.h
powerpc: Fix some #ifndef __KERNEL__ that should be #ifdef
2006-01-09 15:14:05 +11:00
sections.h
[PATCH] powerpc: sanitize header files for user space includes
2006-01-09 15:13:08 +11:00
semaphore.h
Merge ../linux-2.6 by hand
2005-10-31 13:37:12 +11:00
sembuf.h
[PATCH] powerpc: Standardize on _ASM_POWERPC header symbol prefix
2005-09-09 22:11:34 +10:00
serial.h
powerpc: Introduce a new config symbol to control 16550 early debug code
2006-01-10 16:19:05 +11:00
setup.h
[PATCH] powerpc: Merge a few more include files
2005-09-09 22:11:35 +10:00
shmbuf.h
[PATCH] powerpc: Fix __power64__ typos that should be __powerpc64__
2005-09-09 22:11:35 +10:00
shmparam.h
[PATCH] powerpc: Standardize on _ASM_POWERPC header symbol prefix
2005-09-09 22:11:34 +10:00
sigcontext.h
powerpc: merge sigcontext.h
2005-11-03 16:24:25 +11:00
siginfo.h
[PATCH] ppc64: Add definitions for new PTRACE calls
2005-09-12 17:19:12 +10:00
signal.h
[PATCH] irq-flags: POWERPC: Use the new IRQF_ constants
2006-07-02 13:58:47 -07:00
smp.h
IRQ: Maintain regs pointer globally rather than passing to IRQ handlers
2006-10-05 15:10:12 +01:00
smu.h
[POWERPC] powermac: Constify & voidify get_property()
2006-07-31 15:55:05 +10:00
socket.h
[AF_UNIX]: Datagram getpeersec
2006-06-29 16:58:06 -07:00
sockios.h
[PATCH] powerpc: Standardize on _ASM_POWERPC header symbol prefix
2005-09-09 22:11:34 +10:00
sparsemem.h
[PATCH] powerpc: sanitize header files for user space includes
2006-01-09 15:13:08 +11:00
spinlock_types.h
[PATCH] powerpc: merge include/asm-ppc*/spinlock_types.h into include/asm-powerpc/spinlock_types.h
2005-09-21 19:21:09 +10:00
spinlock.h
[PATCH] Directed yield: direct yield of spinlocks for powerpc
2006-10-01 00:39:22 -07:00
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
spu.h
[POWERPC] spufs: add infrastructure for finding elf objects
2006-10-05 09:21:02 +10:00
sstep.h
powerpc: Make single-stepping emulation (mostly) usable on 32-bit
2005-10-28 22:48:08 +10:00
stat.h
powerpc: merge stat.h
2005-11-03 16:02:23 +11:00
statfs.h
[PATCH] powerpc: merge include/asm-ppc*/statfs.h into include/asm-powerpc/statfs.h
2005-09-21 19:21:10 +10:00
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 rmb() for e500-based machines it
2006-11-01 14:52:48 +11:00
tce.h
[POWERPC] Use 4kB iommu pages even on 64kB-page systems
2006-11-01 14:52:48 +11:00
termbits.h
[PATCH] Add CMSPAR to termbits.h for powerpc and alpha
2006-05-26 11:55:46 -07:00
termios.h
powerpc: use asm-generic/termios.h
2005-11-01 14:36:55 +11:00
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] Cell timebase bug workaround
2006-10-25 11:54:18 +10:00
timex.h
[POWERPC] Cell timebase bug workaround
2006-10-25 11:54:18 +10:00
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: introduce child field in sched_domain
2006-10-03 08:04:06 -07:00
tsi108_irq.h
[POWERPC] Update mpc7448hpc2 board irq support using device tree
2006-08-23 15:51:18 +10:00
tsi108.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
ucc_fast.h
[POWERPC] Add QUICC Engine (QE) infrastructure
2006-10-04 15:24:27 +10:00
ucc_slow.h
[POWERPC] Add QUICC Engine (QE) infrastructure
2006-10-04 15:24:27 +10:00
ucc.h
[POWERPC] Add QUICC Engine (QE) infrastructure
2006-10-04 15:24:27 +10:00
ucontext.h
powerpc: merge ucontext.h
2005-11-03 16:59:17 +11:00
udbg.h
[POWERPC] Add udbg support for RTAS console
2006-06-28 11:59:48 +10:00
unaligned.h
[PATCH] powerpc: Standardize on _ASM_POWERPC header symbol prefix
2005-09-09 22:11:34 +10:00
uninorth.h
powerpc: Merge various powermac-related header files.
2005-10-20 20:53:39 +10:00
unistd.h
[PATCH] rename the provided execve functions to kernel_execve
2006-10-02 07:57:23 -07:00
user.h
[PATCH] powerpc: Merge a few more include files
2005-09-09 22:11:35 +10:00
vdso_datapage.h
[PATCH] powerpc: Kill _machine and hard-coded platform numbers
2006-03-28 23:15:54 +11:00
vdso.h
[PATCH] powerpc: Make the vDSO functions set error code (#2)
2005-11-16 14:05:11 +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
[POWERPC] Constify & voidify get_property()
2006-07-31 15:55:04 +10:00
xmon.h
[POWERPC] Fix xmon=off and cleanup xmon initialisation
2006-10-04 14:52:22 +10:00
xor.h
[PATCH] Move the identical files from include/asm-ppc{,64}
2005-08-30 13:32:05 +10:00