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Darrick J. Wong bdab4e8778 [SCSI] libsas: support NCQ for SATA disks 
This patch adds SATAII NCQ support to libsas.  Both the use_ncq and the
dma_xfer flags in ata_task must be set for NCQ to work correctly on the
Adaptec SAS controller.  The rest of the patch adds ATA_FLAG_NCQ to
sata_port_info and sets up ap->scsi_host so that ata_setup_ncq doesn't
crash.  Please note that this patch is against the aic94xx-sas git tree,
not scsi-misc.  Thanks also to James Bottomley for providing an earlier
version of this patch from which to work.

I've tested this patch on a x206m with a ST380819AS SATA2 disk plugged
into the Adaptec SAS controller.  The drive came up with a queue depth
of 31, and I successfully ran an I/O flood test to coerce libata into
sending multiple commands simultaneously.  A kernel probe recorded the
maximum tag number that had been seen before and after the flood test;
before the test it was 2 and after it was 30, as I expected.

Signed-off-by: Darrick J. Wong <djwong@us.ibm.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2007-07-18 11:14:07 -05:00
..
acorn
acpi
amba
ata [libata] sata_mv: use pci_try_set_mwi() 2007-07-17 16:18:00 -04:00
atm drivers/*: mark variables with uninitialized_var() 2007-07-17 16:23:19 -04:00
auxdisplay Use menuconfig objects II - auxdisplay 2007-07-16 09:05:40 -07:00
base dma: make dma pool to use kmalloc_node 2007-07-16 09:05:51 -07:00
block unregister_blkdev(): delete redundant message 2007-07-17 10:23:03 -07:00
bluetooth
cdrom bsg: add a request_queue argument to scsi_cmd_ioctl() 2007-07-16 08:52:45 +02:00
char zs: move to the serial subsystem 2007-07-18 08:38:22 -07:00
clocksource
connector Use menuconfig objects: connector 2007-07-16 09:05:40 -07:00
cpufreq [CPUFREQ] Restore previously used governor on a hot-replugged CPU 2007-07-13 01:29:51 -04:00
crypto Use menuconfig objects: crypto hw 2007-07-16 09:05:40 -07:00
dio
dma dma-mapping: prevent dma dependent code from linking on !HAS_DMA archs 2007-07-16 09:05:45 -07:00
edac Freezer: make kernel threads nonfreezable by default 2007-07-17 10:23:02 -07:00
eisa
fc4
firewire
firmware edd: switch to pci_get based API 2007-07-16 09:05:42 -07:00
hid USB: add reset_resume method 2007-07-12 16:34:30 -07:00
hwmon SPI: add 3wire mode flag 2007-07-17 10:23:04 -07:00
i2c OMAP: add TI TWL92330/Menelaus Power Management chip driver 2007-07-17 10:23:15 -07:00
ide Revert drivers/ide/ide.c scsi_cmd_ioctl() usage changes 2007-07-17 15:57:42 -07:00
ieee1394 Freezer: make kernel threads nonfreezable by default 2007-07-17 10:23:02 -07:00
infiniband drivers/infiniband/hw/mthca/mthca_qp: kill uninit'd var warning 2007-07-17 16:18:00 -04:00
input Freezer: make kernel threads nonfreezable by default 2007-07-17 10:23:02 -07:00
isdn [ISDN] HiSax hfc_pci: minor cleanups 2007-07-17 17:26:24 -04:00
kvm KVM: Use CPU_DYING for disabling virtualization 2007-07-16 12:05:51 +03:00
leds
macintosh Freezer: make kernel threads nonfreezable by default 2007-07-17 10:23:02 -07:00
mca
md dm: fix memory leak in dm_create_persistent() when starting metadata update thread fails 2007-07-18 08:38:22 -07:00
media Freezer: make kernel threads nonfreezable by default 2007-07-17 10:23:02 -07:00
message i2o debug output cleanup 2007-07-17 10:23:06 -07:00
mfd Freezer: make kernel threads nonfreezable by default 2007-07-17 10:23:02 -07:00
misc IBMASM: must depend on CONFIG_INPUT 2007-07-17 10:23:04 -07:00
mmc Freezer: make kernel threads nonfreezable by default 2007-07-17 10:23:02 -07:00
mtd drivers/*: mark variables with uninitialized_var() 2007-07-17 16:23:19 -04:00
net drivers/*: mark variables with uninitialized_var() 2007-07-17 16:23:19 -04:00
nubus
oprofile
parisc serial: add early_serial_setup() back to header file 2007-07-18 08:38:22 -07:00
parport parport_pc: it887x fix 2007-07-16 09:05:50 -07:00
pci Merge branch 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc 2007-07-16 17:58:08 -07:00
pcmcia powerpc: 8xx: fix whitespace and indentation 2007-07-17 10:23:02 -07:00
pnp Freezer: make kernel threads nonfreezable by default 2007-07-17 10:23:02 -07:00
power Merge git://git.infradead.org/battery-2.6 2007-07-15 16:56:12 -07:00
ps3
rapidio sysfs: add parameter "struct bin_attribute *" in .read/.write methods for sysfs binary attributes 2007-07-11 16:09:09 -07:00
rtc OMAP: add TI TWL92330/Menelaus Power Management chip driver 2007-07-17 10:23:15 -07:00
s390 Make the "z/VM unit record device driver" depend on S390 2007-07-17 15:43:56 -07:00
sbus unregister_blkdev() delete redundant messages in callers 2007-07-17 10:23:03 -07:00
scsi [SCSI] libsas: support NCQ for SATA disks 2007-07-18 11:14:07 -05:00
serial zs: move to the serial subsystem 2007-07-18 08:38:22 -07:00
sh
sn
spi use mutex instead of semaphore in SPI core/init code 2007-07-17 10:23:05 -07:00
tc zs: move to the serial subsystem 2007-07-18 08:38:22 -07:00
telephony drivers/telephony/ixj: cleanup and fix gcc warning 2007-07-17 16:18:00 -04:00
usb drivers/*: mark variables with uninitialized_var() 2007-07-17 16:23:19 -04:00
video fbdev: make fb_append_extra_logo() depend on fb=y 2007-07-18 08:38:22 -07:00
w1 Freezer: make kernel threads nonfreezable by default 2007-07-17 10:23:02 -07:00
zorro sysfs: add parameter "struct bin_attribute *" in .read/.write methods for sysfs binary attributes 2007-07-11 16:09:09 -07:00
Kconfig
Makefile