linux/drivers
Jack Morgenstein ea54b10c77 IB/mlx4: Use multiple WQ blocks to post smaller send WQEs
ConnectX HCA supports shrinking WQEs, so that a single work request
can be made of multiple units of wqe_shift.  This way, WRs can differ
in size, and do not have to be a power of 2 in size, saving memory and
speeding up send WR posting.  Unfortunately, if we do this then the
wqe_index field in CQEs can't be used to look up the WR ID anymore, so
our implementation does this only if selective signaling is off.

Further, on 32-bit platforms, we can't use vmap() to make the QP
buffer virtually contigious. Thus we have to use constant-sized WRs to
make sure a WR is always fully within a single page-sized chunk.

Finally, we use WRs with the NOP opcode to avoid wrapping around the
queue buffer in the middle of posting a WR, and we set the
NoErrorCompletion bit to avoid getting completions with error for NOP
WRs.  However, NEC is only supported starting with firmware 2.2.232,
so we use constant-sized WRs for older firmware.  And, since MLX QPs
only support SEND, we use constant-sized WRs in this case.

When stamping during NOP posting, do stamping following setting of the
NOP WQE valid bit.

Signed-off-by: Michael S. Tsirkin <mst@dev.mellanox.co.il>
Signed-off-by: Jack Morgenstein <jackm@dev.mellanox.co.il>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2008-02-08 13:30:02 -08:00
..
acorn/char
acpi latency.c: use QoS infrastructure 2008-02-05 09:44:22 -08:00
amba
ata iommu sg merging: sata_inic162x: use pci_set_dma_max_seg_size 2008-02-05 09:44:11 -08:00
atm [ATM]: [he] fixing compilation when you define USE_RBPS_POOL/USE_RBPL_POOL 2008-01-28 15:00:15 -08:00
auxdisplay
base Driver core: Remove unneeded get_{device,driver}() calls. 2008-02-02 15:14:49 -08:00
block Merge git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux-2.6-for-linus 2008-02-04 08:00:54 -08:00
bluetooth Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6 2008-02-05 10:09:07 -08:00
cdrom ide-cd: move lba_to_msf() and msf_to_lba() to <linux/cdrom.h> 2008-02-01 23:09:24 +01:00
char Merge branch 'agp-patches' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied/agp-2.6 2008-02-05 09:54:10 -08:00
clocksource
connector [NETNS]: Consolidate kernel netlink socket destruction. 2008-01-28 15:08:07 -08:00
cpufreq cpufreq: fix obvious condition statement error 2008-01-30 13:33:34 +01:00
cpuidle pm qos infrastructure and interface 2008-02-05 09:44:22 -08:00
crypto [S390] crypto: move s390 Kconfig options. 2008-01-26 14:11:17 +01:00
dca
dio dio: ARRAY_SIZE() cleanup 2008-02-05 09:44:23 -08:00
dma
edac drivers/edac/: Spelling fixes 2008-02-03 17:12:34 +02:00
eisa
firewire firewire: fw-sbp2: Use sbp2 device-provided mgt orb timeout for logins 2008-01-30 22:22:29 +01:00
firmware drivers/firmware/: Spelling fixes 2008-02-03 17:13:40 +02:00
gpio gpiolib: pca9539 i2c gpio expander support 2008-02-05 09:44:13 -08:00
hid HID: ADS/Tech Radio si470x needs blacklist entry 2008-01-28 14:51:23 +01:00
hwmon
i2c deprecate obsolete pca9539 driver 2008-02-05 09:44:13 -08:00
ide Spelling fixes: lenght->length 2008-02-03 15:42:53 +02:00
ieee1394 ieee1394: sbp2: fix bogus s/g access change 2008-02-02 13:48:16 +01:00
infiniband IB/mlx4: Use multiple WQ blocks to post smaller send WQEs 2008-02-08 13:30:02 -08:00
input drivers/input/: Spelling fixes 2008-02-03 17:15:20 +02:00
isdn drivers/isdn/: Spelling fixes 2008-02-03 17:16:28 +02:00
leds leds: add possibility to remove leds classdevs during suspend/resume 2008-02-05 09:44:23 -08:00
lguest virtio: reset function 2008-02-04 23:50:03 +11:00
macintosh mac68k: macii adb comment correction 2008-02-05 09:44:24 -08:00
mca
md
media drivers/media/: Spelling fixes 2008-02-03 17:18:59 +02:00
message drivers/message/: Spelling fixes 2008-02-03 17:21:01 +02:00
mfd [ARM] Fix class_device damage caused by 0c55445f20 2008-01-28 10:59:09 +00:00
misc
mmc Merge branch 'blk-end-request' of git://git.kernel.dk/linux-2.6-block 2008-01-29 08:51:32 +11:00
mtd drivers/mtd/: Spelling fixes 2008-02-03 17:22:34 +02:00
net mlx4_core: Clean up struct mlx4_buf 2008-02-06 21:17:59 -08:00
nubus nubus: kill drivers/nubus/nubus_syms.c 2008-02-05 09:44:23 -08:00
of
oprofile
parisc iommu sg merging: parisc: make iommu respect the segment size limits 2008-02-05 09:44:10 -08:00
parport Spelling fixes: lenght->length 2008-02-03 15:42:53 +02:00
pci iommu sg merging: PCI: add dma segment boundary support 2008-02-05 09:44:12 -08:00
pcmcia drivers/pcmcia: add missing pci_dev_get 2008-02-05 09:44:09 -08:00
pnp git-x86: drivers/pnp/pnpbios/bioscalls.c build fix 2008-01-30 13:32:31 +01:00
power apm_power: check I.intval for zero value, we use it as the divisor 2008-02-02 02:44:34 +03:00
ps3
rapidio Merge branch 'linux-2.6' 2008-01-31 11:25:51 +11:00
rtc Merge git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6 2008-01-29 08:52:50 +11:00
s390 [S390] dcss: Initialize workqueue before using it. 2008-02-05 16:51:01 +01:00
sbus
scsi iommu sg merging: call dma_set_seg_boundary in __scsi_alloc_queue() 2008-02-05 09:44:12 -08:00
serial m68knommu: use ARRAY_SIZE in ColdFire serial driver 2008-02-05 09:44:21 -08:00
sh
sn
spi Spelling fixes: lenght->length 2008-02-03 15:42:53 +02:00
ssb drivers/ssb/: Spelling fixes 2008-02-03 17:30:25 +02:00
tc
telephony
uio
usb Merge git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/pci-2.6 2008-02-02 14:29:33 +11:00
video drivers/video/: Spelling fixes 2008-02-03 17:31:49 +02:00
virtio virtio: balloon driver 2008-02-04 23:50:13 +11:00
w1 i2c: normal_i2c can be made const (remaining drivers) 2008-01-27 18:14:47 +01:00
watchdog drivers/watchdog/: Spelling fixes 2008-02-03 17:32:52 +02:00
xen
zorro
Kconfig gpiolib: add drivers/gpio directory 2008-02-05 09:44:12 -08:00
Makefile gpiolib: add drivers/gpio directory 2008-02-05 09:44:12 -08:00