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David S. Miller e24c2d963a [PATCH] PCI: DMA bursting advice 
After seeing, at best, "guesses" as to the following kind
of information in several drivers, I decided that we really
need a way for platforms to specifically give advice in this
area for what works best with their PCI controller implementation.

Basically, this new interface gives DMA bursting advice on
PCI.  There are three forms of the advice:

1) Burst as much as possible, it is not necessary to end bursts
   on some particular boundary for best performance.

2) Burst on some byte count multiple.  A DMA burst to some multiple of
   number of bytes may be done, but it is important to end the burst
   on an exact multiple for best performance.

   The best example of this I am aware of are the PPC64 PCI
   controllers, where if you end a burst mid-cacheline then
   chip has to refetch the data and the IOMMU translations
   which hurts performance a lot.

3) Burst on a single byte count multiple.  Bursts shall end
   exactly on the next multiple boundary for best performance.

   Sparc64 and Alpha's PCI controllers operate this way.  They
   disconnect any device which tries to burst across a cacheline
   boundary.

   Actually, newer sparc64 PCI controllers do not have this behavior.
   That is why the "pdev" is passed into the interface, so I can
   add code later to check which PCI controller the system is using
   and give advice accordingly.

Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2005-06-27 21:52:45 -07:00
..
arch-aaec2000 [PATCH] ARM: 2686/2: AAEC-2000 Core support 2005-06-20 18:51:05 +01:00
arch-cl7500 [PATCH] ARM: cleanup vmalloc start/offset macros 2005-05-03 12:20:29 +01:00
arch-clps711x [PATCH] ARM: cleanup vmalloc start/offset macros 2005-05-03 12:20:29 +01:00
arch-ebsa110 [PATCH] ARM: cleanup vmalloc start/offset macros 2005-05-03 12:20:29 +01:00
arch-ebsa285 [PATCH] ARM: cleanup vmalloc start/offset macros 2005-05-03 12:20:29 +01:00
arch-epxa10db [PATCH] ARM: cleanup vmalloc start/offset macros 2005-05-03 12:20:29 +01:00
arch-h720x [PATCH] ARM: cleanup vmalloc start/offset macros 2005-05-03 12:20:29 +01:00
arch-imx [PATCH] ARM: 2666/1: i.MX pwm controller defines 2005-05-10 19:01:35 +01:00
arch-integrator [PATCH] ARM SMP: Add missed files from Integrator/CP platform 2005-06-19 09:52:07 +01:00
arch-iop3xx [PATCH] ARM: cleanup vmalloc start/offset macros 2005-05-03 12:20:29 +01:00
arch-ixp4xx [PATCH] ARM: 2745/1: Fix IXP4xx debug macros 2005-06-24 20:54:35 +01:00
arch-ixp2000 [PATCH] ARM: 2756/1: add ixp2000 msf mapping 2005-06-26 22:24:17 +01:00
arch-l7200 [PATCH] ARM: cleanup vmalloc start/offset macros 2005-05-03 12:20:29 +01:00
arch-lh7a40x [PATCH] ARM: cleanup vmalloc start/offset macros 2005-05-03 12:20:29 +01:00
arch-omap [PATCH] I2C: add i2c driver for TPS6501x 2005-06-21 21:52:01 -07:00
arch-pxa [PATCH] ARM: 2703/1: pxa-regs.h: complete I2S GPIO alternate functions for PXA27x 2005-06-08 19:00:15 +01:00
arch-rpc [PATCH] ARM: cleanup vmalloc start/offset macros 2005-05-03 12:20:29 +01:00
arch-s3c2410 [PATCH] ARM: 2676/1: S3C2440 - NAND register additions 2005-05-12 19:27:13 +01:00
arch-sa1100 [PATCH] ARM: cleanup vmalloc start/offset macros 2005-05-03 12:20:29 +01:00
arch-shark [PATCH] ARM: cleanup vmalloc start/offset macros 2005-05-03 12:20:29 +01:00
arch-versatile [PATCH] ARM: 2693/1: Add PCI support for Versatile/PB 2005-06-20 18:51:06 +01:00
hardware [PATCH] ARM: AMBA CLCD: X resolutions must be multiples of 16 2005-04-28 10:46:15 +01:00
mach [PATCH] ARM: Generic Dynamic Tick Timer support for ARM, take 4 2005-06-25 19:39:45 +01:00
a.out.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
apm.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
assembler.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
atomic.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
bitops.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
bug.h [PATCH] remove all kernel BUGs 2005-05-01 08:59:01 -07:00
bugs.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
byteorder.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
cache.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
cacheflush.h [PATCH] ARM: Add common CACHE_COLOUR macro 2005-06-20 11:31:09 +01:00
checksum.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
cpu-multi32.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
cpu-single.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
cpu.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
cputime.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
current.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
delay.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
div64.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
dma-mapping.h [PATCH] arm: add comment about dma_supported() 2005-04-16 15:23:57 -07:00
dma.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
domain.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
ecard.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
elf.h [PATCH] ARM: 2696/1: remove ';' in ELF_DATA define in asm-arm{,26}/elf.h 2005-06-03 20:52:26 +01:00
errno.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
fcntl.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
fiq.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
floppy.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
fpstate.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
glue.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
hardirq.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
hardware.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
hdreg.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
ide.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
io.h [PATCH] ARM: 2747/1: allow platforms to provide their own iomap implementation 2005-06-24 23:11:31 +01:00
ioctl.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
ioctls.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
ipc.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
ipcbuf.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
irq.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
kmap_types.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
leds.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
limits.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
linkage.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
local.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
locks.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
mc146818rtc.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
memory.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
mman.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
mmu.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
mmu_context.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
mmzone.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
module.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
msgbuf.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
namei.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
numnodes.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
nwflash.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
page.h [PATCH] ARM: Move copy/clear user_page locking into implementation 2005-05-10 14:23:01 +01:00
param.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
parport.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
pci.h [PATCH] PCI: DMA bursting advice 2005-06-27 21:52:45 -07:00
percpu.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
pgalloc.h [PATCH] ARM: Factor out common pmd_populate functionality 2005-06-22 20:58:29 +01:00
pgtable.h [PATCH] ARM: cleanup vmalloc start/offset macros 2005-05-03 12:20:29 +01:00
poll.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
posix_types.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
proc-fns.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
processor.h [PATCH] ARM: Fix kernel stack offset calculations 2005-05-05 13:11:00 +01:00
procinfo.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
ptrace.h [PATCH] ARM: showregs 2005-04-17 15:50:36 +01:00
resource.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
rtc.h [PATCH] ARM: RTC: allow driver methods to return error 2005-04-30 12:19:28 +01:00
scatterlist.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
sections.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
segment.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
semaphore-helper.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
semaphore.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
sembuf.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
serial.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
setup.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
shmbuf.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
shmparam.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
sigcontext.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
siginfo.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
signal.h [PATCH] ARM: Generic Dynamic Tick Timer support for ARM, take 4 2005-06-25 19:39:45 +01:00
sizes.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
smp.h [PATCH] smp_processor_id() cleanup 2005-06-21 18:46:13 -07:00
socket.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
sockios.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
spinlock.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
stat.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
statfs.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
string.h [PATCH] ARM: 2653/1: Fix memset and memzero macro double-reference of parameters 2005-04-25 23:40:05 +01:00
suspend.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
system.h [PATCH] sched: cleanup context switch locking 2005-06-25 16:24:43 -07:00
termbits.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
termios.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
therm.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
thread_info.h [PATCH] streamline preempt_count type across archs 2005-06-23 09:45:19 -07:00
timex.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
tlb.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
tlbflush.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
topology.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
traps.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
types.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
uaccess.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
ucontext.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
unaligned.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
unistd.h [PATCH] ARM: 2651/3: kernel helpers for NPTL support 2005-04-29 22:08:33 +01:00
user.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
vfp.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
vfpmacros.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
vga.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
xor.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00